Hereward III "The Wake" Of Mercia deSeagrave
Hereward III "The Wake" Of was born about 1114 in England.  He died about 1166.

 Wilburga
Wilburga was born in 1130.  Wilburga is no longer alive.

 Gilbert deSeagrave
Gilbert was born about 1160 in Segrave,Lancastershire,England.  He died in 1201.