As sole ambassador, he helped signed a peace treaty in 1719 with the Mingo, Shawnee, Delaware, and Conawage Indians.
[1] When there were territory disputes between Delaware and Maryland, French was appointed "Guardian of the Marches of the Province", and negotiated with agents of Lord Baltimore.
[1] He also bought four acres of land along the Christiana River, and opened a grist mill, which, with his political positions, helped him become a wealthy individual, according to The Morning News.
[1] When Patrick Gordon was made a successor to Keith, French was given a position on the Delaware Supreme Court as top justice on July 25, 1726.
[2] He was removed one year later, when documents were shown that alleged he made derogatory comments about the Penn Family.