Pierre I De Grandson Seigneur 
Pierre I was born about 1190 in Neuchatel, , , Switzerland. Pierre I's father was Ebal IV De Grandson and his mother is Beatrice Of Geneva. His paternal grandfather was Ebal III De Grandson Seigneur and his paternal grandmother is Jordane (); his maternal grandfather was Amadeo I (Amadeus) Of Geneva Count and his maternal grandmother is Matilda De Neufchatel. He was an only child. He died about 1234. He was buried about 1234.-
Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.~ 1050 in La Sarraz, Waadt, , Switzerland d.1114
- b.~ 1097 in Grandson, Waadt, , Switzerland d.~ 1132
- b.~ 1050 in La Sarraz, Waadt, , Switzerland
- b.~ 1110 in La Sarraz, Waadt, , Switzerland d.~ 1158
- b.~ 1091 in Grandson, Waadt, , Switzerland
- b.~ 1133 in La Sarraz, Waadt, , Switzerland d.~ 1174
- b.~ 1154 in Grandson, , Waadt, Switzerland d.1235
- b.~ 1134 in La Sarraz, Waadt, , Switzerland
- b.~ 1190 in Neuchatel, , , Switzerland d.~ 1234
- b.~ 1012 in Genf, Genf, , Switzerland d.~ 1080
- b.~ 0990
- b.~ 1050 in Genf, Genf, , Switzerland d.1125/1128
- b.~ 1030 in Genf, Genf, , Switzerland
- b.~ 1100 in Genf, Genf, , Switzerland d.26 Jun 1178
- d.10 Feb 1127 in At Payerne
- b.~ 1054 in Genf, Genf, , Switzerland
- b.~ 1154 in Genf, Genf, , Switzerland
- b.~ 1086
- b.~ 1104 in Genf, Genf, , Switzerland
- b.~ 1088
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They had a son named Amadeus.
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Children
Amadeus De Grandson Seigneur
Amadeus was born in 1229 in Neuchatel, , , Switzerland. He died at the age of 71 in 1300. He was buried in 1300.
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