Robert IV D' Alencon 
Robert IV D' was born in 1217. Robert IV D''s father was Robert III D' Alencon and his mother was Emma De Laval. He had two half-sisters named Mahaut D' and Alix D'. He died at the age of 1 in 1218.General Notes
SOURCES: "Ancestors/Descendants of William Peverel" http://www.geneastar.org,
