- Bertred Mainwaring
- Julian Fitzmaurice
Birth - about 1249 - , Dublin, Dublin, Ireland - Ellen Mrs Beeston
Birth - about 1249 - Of, Beeston, Cheshire, England - Hawise de Lanvaley
- Joan de Beauchamp
Birth - about 1249 - Of, Elmley Castle, Worcestershire, England - Margaret de Clare
Birth - 1249 - , Tunbridge, Kent, England - Helewisa de Insula
Birth - about 1249 - Of, Sessay, Yorkshire, England - Joan de Vivonne
Birth - about 1249 - , Hertfordshire, England - Emmeline de Longespee
Birth - 1250 - Of, , Ulster, Ireland - Alionore Clinton
Birth - about 1250 - Of Stafford, England - Helene Iversdatter Saltensee
- Millicent de Cantilupe (Cauntelo]
Birth - about 1250 - Of, Calne, Wiltshire, England - Alice de Armenters
Birth - about 1250 - Of Stowe, Nrthmp, Engl - Alice Burgate
Birth - 1250 - , Sulfolk, , Eng - Catherine Herbert
- Constance Princess Of Sicily
Birth - about 1250 - Of, , , Sicily - Matilda (unknown)
Death - after 1250 - Of, Warsop, Nottingham, England - Joan de Valoines
- Lucia Fitzpiers
- Aldonca de Velasco
Birth - about 1250 - Of Toledo, New Castile, Spain - Joan Fitzjohn
Birth - about 1250 - Of, Shere, Surrey, England - Margaret Or Margery (unknown)
- Tereza Sanchez Princess PORTUGAL & The Algarves
- Marie (Jeanne) Countess Ponthieu & Montreuil]
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