Cornelius Dewees was presumably the son of Garret Hendricks de wees who settled in Germantown, Pa in 1689 with his 3 sons and one daughter, Wilhelmina who married Nicholas Rittenhouse. His second son, Cornelius, born in Holland, settled in Skippack township in the Perkiomen region, on a farm which he and his brother William bought in partnership in 1708. He married Margaret Koster or Kuster and had several children.
Cornelius Dewees chose the occupation as farmer and took up residence in what is now Montgomery Co. His descendants are scattered throughout PA, OH and other states having amassed fortunes by tilling the soil.
In 1708 Cornelius moved to the Van Bebber tract, which comprised what is now Perkiomen Township. Both Cornelius and his brother William sent their children to the school taught by Francis Daniel Pastorius at Germantown.
In Rupps collection of 30,000 names of emigrants to PA:
First Settlers at Gemantown 1683-1710
pg 430
3130There is a book about the DeWees family at <
http://www.deweeses.com/LaMunyan.htm#Cornelius%20First>