Nils Jönsson (Oxenstierna)
Nils Jönsson Oxenstierna,( 1390s – 1450s) was a Swedish statesman and co-regent of Sweden, under the Kalmar Union, from January to June 1448, together with his brother Bengt Jönsson Oxenstierna.
Member of the Privy Council of Sweden at least 1432.
Castellan"( hövitsman)" at Borgholm Castle in 1436, Stäket in 1438, and Nyköping Castle in 1442.
Dubbed as knight by King Christopher of Bavaria following his coronation in 1441.
Nils Jönsson was son of important nobles and landowners: his mother lady Märta Finvidsdotter was the heiress of the Frössvik high- noble family, and his father Jöns Bengtsson was son and one of the heirs of lady Ingeborg Nilsdotter( from family that is called the earliest Sparre in later historiography and genealogy), heiress of Ängsö and Salsta.
Jöns Bengtsson inherited Frössvik( in Uppland) from mother and Ängsö( in Västmanland) from father.
Nils is credited for having founded the castle of Djursholm in his lands.
From his two earlier marriages, Nils did not succeed to have any surviving heirs.
His third wife lady Karin of the gumsehuvud- sture family bore a number of children( of whom, as is usual in Middle Ages, half died sooner or later without marriage and issue).
His surviving son Erik did not have children.
Three of Nils' daughters married noblemen( two of them sons of the Vasa family, Nils' allies), but only through one of them, Kerstin who married lord Nils of Hjulsta, continues a more permanent issue.
Due to such childlessness, a portion of Nils' properties passed ultimately to others than his own descendants, as inheritances through his daughters- in- and sons- in- law.
Gabriel Bengtsson Oxenstierna
Gabriel Bengtsson Oxenstierna af Korsholm och Wasa, 1st Count of Korsholma and Vaasa, Finnish:" Gabriel Pentinpoika Oxenstierna",( 18 March 1586 at Lindholmen Castle, Västergötland – 12 December 1656 at Edsberg Manor, Sollentuna) was a Swedish statesman, jurist and diplomat.
Erik Axelsson Tott
Erik Axelsson( Tott),( c. 1419 – 1481) Dano- Swedish statesman and regent of Sweden, under the Kalmar Union, in 1457, shared with Jöns Bengtsson Oxenstierna, and alone 1466 – 1467.
Victor Vianu
Victor Vianu is a computer scientist, a professor of computer science and engineering at the University of California, San Diego.
He served as editor- in- chief of the" Journal of the ACM" from 2009 to 2015.
Vianu did his graduate studies at the University of Southern California, earning his Ph.D. in 1983 under the supervision of Seymour Ginsburg; he joined the UCSD faculty in 1984.
Vianu's book" Foundations of Databases"( with Serge Abiteboul and Richard Hull, Addison- Wesley, 1995) is a standard graduate textbook in database theory.
In finite model theory and computational complexity theory, the Abiteboul – Vianu theorem( also published with Abiteboul, at the 1991 Symposium on Theory of Computing) states that polynomial time equals PSPACE if and only if fixed point logic equals partial fixed point logic.
At the 2010 Symposium on Principles of Database Systems, Vianu and his co-authors Dan Suciu and Tova Milo won the Alberto O. Mendelzon Test- of- Time Award for their work ten years prior on type checking for XML transformation languages.
Vianu and his co-author Luc Segoufin won a second Alberto O. Mendelzon Test- of- Time award in 2015, for their 2005 article" Views and Queries: Determinacy and Rewriting."
In 2006, Vianu was elected as a Fellow of the ACM for his" contributions to database management systems".
In 2013, he was elected Fellow of the AAAS( American Association for the Advancement of Science).
He was elected to Academia Europaea in 2014.
In his first paper recorded by DBLP( presented at MFCS, 1977), Vianu acknowledges Solomon Marcus for guidance.
Bengt Bengtsson Oxenstierna
Bengt Bengtsson Oxenstierna af Eka och Lindö, Baron of Eka and Lindö( 1591 at Frösvik near Rydbo – 1643 in Riga, Swedish Livonia), in non-contemporary sources sometimes referred to as Resare- Bengt Bengt the Traveller, was a Swedish diplomat and noble, Swedish Privy Councillor, and Governor- General of Ingria and Livonia.
He is mainly known for his extensive travels, as he was one of the few Swedish contemporaries who travelled to Persia, Palestine and Egypt.
Alberto O. Mendelzon
Alberto O. Mendelzon was an Argentine- Canadian computer scientist who died on June 16, 2005.
Alberto Mendelzon was born in Buenos Aires, Argentina.
He graduated from the University of Buenos Aires in 1973.
He then received a Ph.D. degree from Princeton University in 1979, where his advisor was Jeffrey Ullman.
After that he was a post -doctoral fellow at the IBM T.J. Watson Research Center for a year before joining the faculty of the University of Toronto in 1980.
He was one of the pioneers who helped to lay the foundations of relational databases.
His early work on database dependencies has been influential in both the theory and practice of data management.
He has made fundamental contributions in the areas of graphical query languages, knowledge- base systems, and on- line analytic processing.
His work has provided the foundation for languages used to query the structure of the web.
Mendelzon established some of the earliest results on using the relational data model.
Together with his thesis advisor, Jeffrey Ullman, and fellow Princeton students, including David Maier and Yehoshua Sagiv, he co-authored a number of influential papers that laid out the fundamental issues and approaches for relational databases.
In a now- famous paper( Maier, Mendelzon and Sagiv, TODS 1979), he introduced the chase, a method for testing implication of data dependencies that is now of widespread use in the database theory literature.
This work has been highly influential: it is used, directly or indirectly, on an everyday basis by people who design databases, and it is used in commercial systems to reason about the consistency and correctness of a data design.
New applications of the chase in meta-data management and data exchange are still being discovered.
In the 1980s, Mendelzon began an important line of work on graphical query languages.
His work has been called prescient as it began before the World Wide Web, and nonetheless established many of the scientific principles required for designing languages to query the Web.
More recently, Mendelzon was a central figure in the work on view- based querying.
Starting with the innovative LMSS95 paper( Levy, Mendelzon, Sagiv, and Srivastava, PODS 1995) that introduced the problem of answering queries using views, Alberto Mendelzon made several important contributions to the emerging area of view- based modeling and processing.
His research was central to the development of many areas of database research such as database design, semantic query optimization, graphical query languages, and querying web data.
In addition, he also made important contributions to recursive query languages, on- line analytic processing, similarity- based queries, data warehouses and view maintenance, algorithms for computing web page reputations, and indexing of XML data.
Mendelzon was an active member of both the database theory and database systems research communities.
He served as the PC Chair for ACM PODS in 1991 and as General Chair in both 1997 and 1998.
He served as PC Chair for VLDB in 1992, and as a member of the SIGMOD Executive Committee from 1998 to 2001.
He was a member of the Royal Society of Canada.
Willem Brakman
Willem Pieter Jacobus Brakman( 1922 – 2008) was a Dutch writer who made his literary debut with the novel" Een winterreis" in 1961.
Brakman received the P. C. Hooft Award in 1980.
He was born on June 13th, 1922 in The Hague, Netherlands, and died on May 8th, 2008 in the same country.
David Maier
David Maier( born 2 June 1953) is the Maseeh Professor of Emerging Technologies in the Department of Computer Science at Portland State University.
Born in Eugene, OR, he has also been a computer science faculty member at the State University of New York at Stony Brook( 1978 – 82), Oregon Graduate Center( OGC, 1982–2001), University of Wisconsin( UW, 1997 – 98), Oregon Health& Science University( 2001 – present) and National University of Singapore( 2012 – 15).
He holds a B.A. in Mathematics and Computer Science from the University of Oregon( Honors College, 1974) and a Ph.D. in Electrical Engineering and Computer Science from Princeton University( 1978).
Maier has been chairman of the program committee of ACM SIGMOD.
He also served as an associate editor of ACM Transactions on Database Systems.
Maier has consulted with Tektronix, Inc., Servio Corporation, the Microelectronics and Computer Technology Corporation( MCC), Digital Equipment Corporation, Altair, Honeywell, Texas Instruments, IBM, Microsoft, Informix, Oracle Corporation, NCR, and Object Design, as well as several governmental agencies.
He is a founding member of the Data- Intensive Systems Center( DISC), a joint project of OGI and Portland State University.
He is the author of books on relational databases, logic programming and object- oriented databases, as well as papers in database theory, object- oriented technology and scientific databases.
He received the Presidential Young Investigator Award from the National Science Foundation in 1984 at OGC, and was awarded the 1997 SIGMOD Edgar F. Codd Innovations Award for his contributions in objects and databases at UW.
He is also an ACM Fellow.
Maier established some of the earliest results on using the relational model.
Together with his thesis advisor, Jeffrey Ullman, and fellow Princeton students, including Alberto O. Mendelzon and Yehoshua Sagiv, he co-authored a number of influential papers that laid out the fundamental issues and approaches for relational databases.
In a now- famous paper( Maier, Mendelzon and Sagiv, TODS 1979), he introduced the chase, a method for testing implication of data dependencies that is now of widespread use in the database theory literature.
This work has been highly influential: it is used, directly or indirectly, on an everyday basis by people who design databases, and it is used in commercial systems to reason about the consistency and correctness of a data design.
New applications of the chase in meta-data management and data exchange are still being discovered.
He is credited for coining the term Datalog.
Jöns Bengtsson Oxenstierna
Jöns Bengtsson( Oxenstierna), in Latin known as Johannes Benedicti de Salista,( 1417 – 15 December 1467) was a Swedish clergyman, canon law scholar and statesman, Archbishop of Uppsala( 1448 – 1467).
He was Regent of Sweden, under the Kalmar Union, in 1457, shared with Erik Axelsson( Tott), and alone 1465 – 1466.
Godwin Davy
Godwin Davy( born 15 December 1979) is an Anguillan international footballer who plays as a goalkeeper.
He made his international debut in a World Cup qualifying match against El Salvador, resulting in a lopsided match, losing 12- 0 in February 2008, and also played in the 4 – 0 loss to the same country in the return match in March 2008.

Question: Are both Jöns Bengtsson Oxenstierna and Alberto O. Mendelzon from the same country?
Answer: no