Family: Gilbert De Clare / Isobel Marshall (fam01722)
m. 09 Oct 1217-
Male
Gilbert De Clare
Birth 1180 Hertford, Hertfordshire, England 
Death 25 Oct 1230 Penrose, Brittany, France Burial Tewkesbury Abbey, Gloucester, England Marriage 09 Oct 1217 [1] Penrose, Brittany, France [1] Father 4th Earl of Hertford, 6th Earl of Clare 4th Earl of Hertford, 6th Earl of Clare Richard De Clare | fam01724 Group Sheet Mother Countess of Gloucester Countess of Gloucester Amica Meullent Of Gloucester | fam01724 Group Sheet
Female
Isobel Marshall
Birth 09 Oct 1200 Tewkesbury, Gloucestershire, England Death 17 Jan 1240 Berkhamstead, Hertfordshire, England Burial Father 4th Earl of Pembroke 4th Earl of Pembroke William Marshall FitzGilbert | fam01690 Group Sheet Mother Isobel Fitzrichard De Clare | fam01690 Group Sheet
Male
Earl of Gloucester Earl of Gloucester Richard De Clare
Birth 04 Aug 1222 Gloucestershire, England Death 15 Jul 1262 Ashenfield Manor, Waltham, Kent, England Burial Spouse Margaret De Burgh | fam01723 Marriage 1232 Spouse Maud De Lacie | fam01721 Marriage 25 Jan 1237 Lincolnshire, England
Male
William De Clare
Birth 18 May 1228 Gloucestershire, England Death 1258 Retherford, England Burial Spouse // | fam4288650717 Marriage
Female
Isabel of Gloucester De Clare
Birth 08 Nov 1230 Gloucester, Kent, England Death 1251 Burial Spouse Lord of Annandale Lord of Annandale Robert de Brus | fam07022 Marriage May 1240 Scotland
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Sources - [source03435] RCKarnes, http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=arciek&id=I15761&style=TABLE
Carrie's Family Tree, (Publication Date: 01 JAN 2008
Media: Website / URL).
- [source03435] RCKarnes, http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=arciek&id=I15761&style=TABLE
Carrie's Family Tree, (Publication Date: 01 JAN 2008
Media: Website / URL).