William III Marshall
William III was born in 1146 in Pembroke, Pembrokeshire, Wales and his baptism took place on May 12th, 1146.  He died at the age of 73 on May 14th, 1219 in Caversham Manor, England.  He was buried in May 1219 in Round Chapel Of Knight's Temple, London, Middlesex, England.

 Isabel De Clare
Isabel De was born about 1172 in Pembroke, Pembrokeshire, Wales.  She died in 1220 in Pembroke, Pembrokeshire, Wales.  She was buried in Tintern Abbey, Tintern, Monmouthshire, England.

 Maud Marshall
Maud was born about 1192 in Of, Pembroke, Pembrokeshire, Wales and her baptism took place in September 1201.  She died on March 27th, 1248 in Tintern Abbey, Chapel Hill, Monmouthshire, England.  She was buried on April 4th, 1248 in Tintern Abbey, Chapel Hill, Monmouthshire, England.

 Eva Marshall
Eva was born about 1194 in Pembroke, Pembrokeshire, Wales.  She died before 1246 in England.