Lord Eustace de Baliol of Gainford
Eustace was born about 1168.  He died about 1210.

 Agnes de Percy
Agnes was born in 1134 in Alnwick, Northumberland, England.  She died before October 13th, 1204 in Petsworth, Sussex, England.

 Hugh de Baliol
Hugh was born about 1191 in Bernard Castle, Gainford, Durham, England.