Baldwin I De Guines

Baldwin I's father was Eustace De Guines and his mother is Susanna De Granines.  His paternal grandfather was Rodelphus (Raoul) () and his paternal grandmother is Rosetta De St Pol; his maternal grandfather is Sither De Granines.  He was an only child.  He died in 1091.  He was buried in 1091.

They had a daughter named Gisele.