Gilbert De Lacy
Gilbert was born about 1206 in Dublin, Ireland.  He died about 1231.

 Isobel De Bigod
Isobel was born about 1210 in Thetford, Norfolk, England.  She died in 1258.

 Margaret De Lacy
Margaret was born about 1226 in Ewyas Lacy, Herefordshire, England.  She died after June 10th, 1256 in Alton Castle, Cheadle, Staffordshire, England.

 Maud De Lacy
Maud was born before 1230 in Dublin, Ireland.  She died on April 11th, 1304.