Question: Ethan Tecumseh Vishniac (born 1955) is an American astrophysicist, his wife Ilene Busch-Vishniac, the ninth president of the University of Saskatchewan (2012-2014), was previously Dean of the Faculty of Engineering at which American entrepreneur, abolitionist and philanthropist of 19th-century Baltimore, Maryland?

Context articles: Brown Memorial Presbyterian Church
Mary Ellen Pleasant
Ilene Busch-Vishniac
Ethan Vishniac
Inside baseball (strategy)
Johns Hopkins
Susan Avery
Neb Duric
Johns Hopkins University
M. Brian Blake

Brown Memorial Park Avenue Presbyterian Church of Baltimore, Maryland, U.S., is a large, Gothic Revival-style church built in 1870 and located at Park and Lafayette Avenues in the city's Bolton Hill section.
 Named in memory of a 19th-century Baltimore financier, the ornate church is noted for its exquisite stained glass windows by renowned artist Louis Comfort Tiffany, soaring vaulted ceiling, and the prominent persons associated with its history.
 Maltbie Babcock, who was the church's pastor 1887–1900, wrote the familiar hymn, "This is My Father's World".
 Storied virtuoso concert performer Virgil Fox was organist at Brown Memorial early in his career (1936–1946).
Mary Ellen Pleasant (born 19 August 1814?
 – 1817 - died 4 January 1904) was a 19th-century African American entrepreneur widely known as Mistress Pleasant.
 She identified herself as "a capitalist by profession" in the 1890 United States Census.
 People called her "Mammy" Pleasant but she did not approve.
 Mistress Pleasant used her fortune to further the abolitionist movement.
 She worked on the Underground Railroad across many states and then helped bring it to California during the Gold Rush Era.
 She was a friend and financial supporter of John Brown, and was well known in abolitionist circles.
 After the Civil War, she took her battles to the courts in the 1860s and won several civil rights victories, one of which was cited and upheld in the 1980s and resulted in her being called “The Mother of Human Rights in California”.
Ilene Busch-Vishniac is an American-born mechanical engineer and university administrator.
 She served as Dean of the Whiting School of Engineering at Johns Hopkins University from 1998 to 2003.
 then resigned the position to serve as President of the Acoustical Society of America, an elected non-gratis position, from 2003 to 2005.
 She served as Provost and Vice-President for Academic Affairs at McMaster University from 2007 to 2012, and as President of the University of Saskatchewan from 2012 to 2014.
 She has written research papers for the ASME on matters related to tribology.
Ethan Tecumseh Vishniac (born 1955) is an American astrophysicist.
 He is the son of microbiologist Wolf V. Vishniac, and grandson of photographer Roman Vishniac.
 He is the Editor-in-Chief of the Astrophysical Journal and a professor of Astronomy at Johns Hopkins University in Baltimore, after holding positions at University of Saskatchewan in Saskatoon, McMaster University in Hamilton, Canada, and University of Texas in Austin.
 His wife Ilene Busch-Vishniac, the ninth president of the University of Saskatchewan (2012-2014), was previously Dean of the Faculty of Engineering at Johns Hopkins, and provost and vice-president (academic) of McMaster University from 2007 until 2012.
Inside baseball is a strategy in baseball developed by the 19th-century Baltimore Orioles team and promoted by John McGraw.
 In his book, "My Thirty Years of Baseball", McGraw credits the development of the "inside baseball" to manager Ned Hanlon.
 In the 1890s, this kind of play was referred to as "Oriole baseball" or "Baltimore baseball".
Johns Hopkins (May 19, 1795 – December 24, 1873) was an American entrepreneur, abolitionist and philanthropist of 19th-century Baltimore, Maryland.
Susan K. Avery (born 1950) is an American atmospheric physicist and President Emerita of the Woods Hole Oceanographic Institution (WHOI) in Massachusetts, where she led the marine science and engineering research organization from 2008-2015.
 She was the ninth president and director and the first woman to hold the leadership role at WHOI.
 She is Professor Emerita at the University of Colorado, Boulder (UCB), where she served on the faculty from 1982-2008.
 While at UCB she also served in various administrative positions, including director of the Cooperative Institute for Research in Environmental Sciences (CIRES), a 550-member collaborative institute between UCB and the National Oceanic and Atmospheric Administration (NOAA) (1994-2004); and interim positions (2004-2007) as vice chancellor for research and dean of the graduate school, and provost and executive vice chancellor for academic affairs.
 Currently she is a senior fellow at the Consortium for Ocean Leadership in Washington, D.C.
Neb Duric (born 1955) is a Serbian-born American astrophysicist.
 He received his PhD in astrophysics in 1984 from the University of Toronto, where he earned the Royal Astronomical Society of Canada Gold Medal for academic excellence.
 After a postdoc at University of British Columbia he moved to University of New Mexico, Albuquerque, where he stayed for many years as a professor of physics and astronomy.
 He is a member of American Astronomical Society and Canadian Astronomical Society.
 He has co-authored over 100 scientific papers.
 He wrote a textbook "Advanced Astrophysics" published by Cambridge University Press in 2003.
The Johns Hopkins University (commonly referred to as Johns Hopkins, JHU, or simply Hopkins) is an American private research university in Baltimore, Maryland.
 Founded in 1876, the university was named for its first benefactor, the American entrepreneur, abolitionist, and philanthropist Johns Hopkins.
 His $7 million bequest—of which half financed the establishment of Johns Hopkins Hospital—was the largest philanthropic gift in the history of the United States at that time.
 Daniel Coit Gilman, who was inaugurated as the institution's first president on February 22, 1876, led the university to revolutionize higher education in the U.S. by integrating teaching and research.
 Adopting the concept of a graduate school from Germany's ancient Heidelberg University, Johns Hopkins University is considered the first research university in the United States.
M. Brian Blake (born 1971) is an American computer scientist/software engineer and the executive vice president for academic affairs and provost at Drexel University.
 He was previously dean of the graduate school and vice provost for academic affairs at the University of Miami, an associate dean for research and professor at the College of Engineering at the University of Notre Dame, and department chair and professor of Computer Science at Georgetown University.