Joannes Ingenhousz was born around 1730 in Breda, Noord-Brabant, Nederland. His parents were Arnoldus Ingenhousz and Maria Beckers. He was baptised on 8th December 1730 in Breda
He died on September 07, 1799 in Calne, Wiltshire Unitary Authority, Wiltshire, England,  he was buried on the 9th of September in the St. Mary the Virgin Churchyard
He was a Dutch physiologist, biologist and chemist. He is best known for discovering photosynthesis by showing that light is essential to the process by which green plants absorb carbon dioxide and release oxygen.He also discovered that plants, like animals, have cellular respiration. In his lifetime he was best known for successfully inoculating the members of the Habsburg family in Vienna against smallpox in 1768 and subsequently being the private counsellor and personal physician to the Austrian Empress Maria Theresa.
↑ "England Deaths and Burials, 1538-1991," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:J88L-WQ2 : 24 December 2014), Jno. Ingenhosing, burial 09 Sep 1799; citing Calne, Wiltshire, England, index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 1,279,383.