Pierre I Sire De GRANDSON
Pierre I Sire De was born about 1190 in , Neuchatel, Ne, Switzerland.

 Agnes De NEUCHATEL
Agnes De was born about 1194 in , Neuchatel, Ne, Switzerland.

 Amadeus De GRANDSON
Amadeus De was born in 1229 in , Neuchatel, Ne, Switzerland.  He died at the age of 71 in 1300.

 William De GRANDISON
William De was born in Of, Cassington, Oxfordshire, England.  He died on June 27th, 1335.