Floris I De Gant
Floris I was born about 1030 in Ghent, Flanders, Belgium.

 Gertrude Von Saxony
Gertrude was born before 1035 in Saxony, Germany.

 Bertha of West Friesland
Bertha of West was born about 1055 in Vlaardingen, Holland.  She died in 1094 in Montreul-Sur-Mer, France.