M, #2557, b. circa 1230, d. after 1295
was born circa 1230, son of Gerard LaBlanche
. Jan Dewitt died after 1295.
De Witt is the name of an old Dutch patrician and regenten family. Originally of Dordrechts origin, the genealogy of the family begins with Jan de Witte, a patrician who lived around 1295.  The family have played an important role during the Dutch Golden Age. They were at the centre of Dordrecht and Holland oligarchy from the end of the 16th century until 1672.2
- [S28] Edmund West, "FamilySearch Individual Records", Ancestral File,
name:Jan /De Witt/
father:Gerard /La Blanche/
"Pedigree Resource File," database, FamilySearch (http://familysearch.org/pal:/MM9.2.1/SRZY-LBS : accessed 6 August 2012), entry for Jan /De Witt/.
- [S34] Various, Internet,