Ignaz Friedrich Tausch
Ignaz Friedrich Tausch( 29 January 1793, Theusing – 8 September 1848) was a Bohemian botanist.
He studied philosophy, medicine and natural sciences at the University of Prague, becoming an associate professor of economic and technical botany in 1815.
He discovered at least eleven species of plants, including" Rhizobotrya alpina" and" Saxifraga hostii".
During his career he worked at the botanical garden of Emanuel Joseph Malabaila von Canal( 1745- 1826).
He was the taxonomic authority of many botanical species.
Plants bearing the specific epithet of" tauschii" are named in his honor, e.g." Triticum tauschii".
In 1825, Diederich Franz Leonhard von Schlechtendal named the genus" Tauschia", or umbrellaworts( family Apiaceae) after him.
Dietrich von Schlechtendal
Dietrich Herrman Reinhard von Schlechtendal dr.( 20 October 1834, Halle – 5 July 1916) was a German entomologist who worked on Cynipidae.
von Schlechtendal trained as a mining expert and metallurgist.
He worked for many years as an assistant at the Geologisch- Mineralogischen Institut in Halle.
His botanical knowledge led to study of gall wasps.
Working with the North American species" Neuroterus quercus- batatus"( Fitch) in a laboratory he bred from the parthenogenetic females the bi-sexual form.
This species was then introduced onto Turkey oaks in the Halle Botanic Garden.
The up to then sterile over decades trees produced fertile seeds( Hüsing, 1966).
Many species of Cynipidae were described by von Schlechtendal or their generation sequence was clarified.
His collection of Cynipidae with their galls is shared by the Museum für Naturkunde in Berlin and the Zoological Institute of the University of Halle- Wittenberg which also conserves his collections of Blattidae and Lepidoptera.
Dietrich von Schlechtendal was an honour member of the Entomological Society of Halle and a member of the Stettin Entomological Society.
As well as many short scientific papers he wrote" Die Gallbildungen( Zoocecidien) der Deutschen Gefässpflanzen", 1891, R. Zückler.
Zwickau( 1891).
Fernando Cento
Fernando Cento( 10 August 1883 – 13 January 1973) was a cardinal of the Catholic Church who served as Major Penitentiary of Apostolic Penitentiary.
Heinrich von Tschirschky
Heinrich Leonhard von Tschirschky und Bögendorff (15 July 1858 – 15 November 1916) was a German diplomat and politician, who served as Foreign Secretary and head of the Foreign Office from 24 January 1906 to 25 October 1907.
Georg Wilhelm Franz Wenderoth
Georg Wilhelm Franz Wenderoth( 17 January 1774, Marburg – 5 June 1861) was a German pharmacist and botanist.
Initially trained as a pharmacist, he was employed for a few years at the" Rathsapotheke" in Schweinfurt, where his free time was spent on botanical excursions in the vicinity of the city.
From 1796 he studied medicine and natural sciences at the University of Marburg, obtaining his habilitation in pharmacology and botany in 1806.
Afterwards, he taught classes in physics, chemistry and botany at Rinteln.
In 1810 he returned to Marburg as a professor of botany, distinguishing himself with work done at the Alter Botanischer Garten Marburg.
The botanical genus" Wenderothia" is named in his honor by Diederich Franz Leonhard von Schlechtendal( 1794 – 1866).
Christian Eduard Langethal
Christian Eduard Langethal( 6 January 1806, Erfurt – 28 July 1878, Jena) was a German botanist and agronomist.
He is known for his writings involving agricultural botany and agricultural history.
Beginning in 1827 he studied natural sciences at the University of Jena.
During the winter term of 1834/ 35 he began teaching classes in natural history at the recently built scientific academy at Eldena( near Greifswald), where he worked closely with his former teacher, Friedrich Gottlob Schulze( 1795 – 1860).
In 1839, with Schulze, he returned to the University of Jena as an associate professor of botany.
At Jena he distinguished himself in studies of botany as it applied to agricultural science.
With Diederich Franz Leonhard von Schlechtendal and Ernst Schenk, he continued Jonathan Carl Zenker's" Flora von Thüringen: Und den angrenzenden Provinzen"( 1830 – 1855, 145 issues).
Thilo Irmisch
Johann Friedrich
Thilo Irmisch( 14 January 1816 in Sondershausen – 28 April 1879 in Sondershausen) was a 19th- century German botanist.
Irmisch studied theology, philosophy and natural history at the University of Halle- Wittenberg.
He received training in botany from professor D. von Schlechtendal, who later became his friend.
From 1855, he taught at the high school in Sondershausen.
At the same time, he published numerous larger and smaller papers and books on botanical subjects, in particular plant morphology, e.g." Beiträge zur vergleichenden Morphologie der Pflanzen"( Contribution to a comparative morphology of plants), published in six volumes 1854- 1878.
Two plant genera were named to his honour.
His friend and former teacher von Schlechtendal named the genus" Irmischia", which was soon synonymized with" Metastelma"( Apocynaceae).
August Eichler then named the genus" Thiloa"( Combretaceae) for Thilo Irmisch.
Leonhard von Keutschach
Leonhard von Keutschach( c. 1442 – 8 June 1519) was Prince- Archbishop of Salzburg from 1495 until his death, the last to rule in the feudal style.
Leonhard von Spengel
Leonhard von Spengel( 24 September 1803, in Munich – 8 November 1880, in Munich) was a German classical scholar.
Diederich Franz Leonhard von Schlechtendal
Diederich Franz Leonhard von Schlechtendal( 27 November 1794, Xanten – 12 October 1866, Halle) was a German botanist.
He studied in Berlin, in 1819 becoming curator of the Royal Herbarium.
He was a professor of botany and director of the Botanical Gardens at the Martin Luther University of Halle- Wittenberg from 1833 until his death in 1866.
The genus" Schlechtendalia"( Asteraceae), from Brazil, Uruguay and Argentina, was named in his honor.
He was editor of the botanical journal" Linnaea"( from 1826), and with Hugo von Mohl( 1805- 1872), was publisher of the" Botanischen Zeitung"( from 1843).
He conducted important investigations of the then largely unknown flora of Mexico, carried out in conjunction with Adelbert von Chamisso( 1781- 1838), and based on specimens collected by Christian Julius Wilhelm Schiede( 1798- 1836) and Ferdinand Deppe( 1794- 1861).
Schlechtendal was a critic of Darwinism but accepted a limited form of evolution.
He advocated a form common descent of" some groups of very similar species, which also inhabit a limited area".

Question: Who lived longer, Fernando Cento or Diederich Franz Leonhard Von Schlechtendal?
Answer: Fernando Cento