- John de Segrave
Birth - about 1256 - Of, SEGRAVE, Leicestershire, England - Bartholomew Badlesmere
- William de Standish
Birth - about 1256 - , Standish, Lancashire, England - Neil Earl Of Carrick
- Elizabeth Venables
Birth - about 1256 - , Kinderton, Cheshire, England - Alice de Lindsay
Birth - about 1256 - Of Lamberton, Mordington, Berwickshire, Scotland - Christiana Bruce
Birth - about 1256 - Of, ANNANDALE, Dumfrieshire, Scotland - Ralph De Vernon
Birth - about 1256 - Shipbrook, Cheshire, Eng. - Henry Davenport
Birth - about 1256 - Of, Chester, Cheshire, England - Robert Burghersh
Birth - 1256 - Of Burghersh, Sussex, Of Chiddingstone, Kent - Margery de Lacy
- Gautier de Geneville (Joinville]
Birth - about 1256 - Of, Vaucouleurs, CHAMPAGNE, France - Jeanne D' Avesnes
Birth - about 1256 - Of, Valenciennes, Nord, France - Piers de Geneville
Birth - 1256 - , Dublin, Dublin, Ireland - Isabel (unknown)
- Roger de Mortimer
Birth - about 1256 - Of, Wigmore, Herefordshire, England - Richard Prince Of England
Death - before 1256 - , Westminster, Middlesex, England - John Prince Of England
Death - before 1256 - , Westminster, Middlesex, England - William Prince Of England
Birth - about 1256 - Of, Westminster, Middlesex, England Death - about 1256 - Of, Westminster, Middlesex, England - Robert Or Haydock De Standish
Birth - about 1256 - of Duxbury, Lancaster, England - Alexander De Forbes
Birth - about 1256 - Of, FORBES, Aberdeen, Scotland - Maria Cavieres
Birth - about 1256 - Of, New Castile, Spain - Berta Ferrars
Birth - about 1256 - Of, Thetford, Norfolkshire, England - Eustace Fitzhugh
- Robert Prince Of France
Birth - 1256 - , Paris, Seine, France - Mancia Garcia de Soto-Mayor
Birth - about 1256 - Of, Toledo, New Castile, Spain - Gomez Perez de Palomeque
Birth - about 1256 - Of Toledo, New Castile, Spain - Garci Gomez Carrillo
Birth - about 1256 - Of, New Castile, Spain - Emma Chaworth
Birth - about 1256 - Of Stoke Bruern, Nrthnt, Engl - Garcia Lopez de Padilla
Birth - 1256 - , , , Spain - Maurice (unknown)
Birth - about 1256 - Of Cornwall, Cornwell, England - Eler Henriksen Krummedige
Death - about 1257 - Ottenbüttel, Schleswig - Harald Olufsen Marsk Bild
- Ossa Nielsdatter Saltensee Peck
- Margarethe Nielsdatter Lændi Kaas
Birth - about 1257 - Kaas, Lihme sogn, Viborg amt - Eglentine de Clare
Birth - 1257 - Of, Tunbridge, Kent, England - Juan Garcia De Toledo
Birth - about 1257 - Of Esteban, Hambran, Toledo - Agnes Mrs Somery
Birth - about 1257 - Of, Sulham, Berkshire, England - Owain Ap Griffin Pole
Birth - about 1257 - Of, , Montgomeryshire, Wales - John Rotenheryng
- Alice Standish
Birth - about 1257 - Standish, Lancashire, England - Mary D' Ufford
- Devorguille de Burgh
Birth - about 1257 - Of, Wakerley, Hertfordshire, England - William Martin
Birth - 1257 - Combmartin, Devonshire, England - Annora Manvers
Birth - about 1257 - Holme-Pierrepont, Nottingham, England - Eleonor Fitz Piers
Birth - about 1257 - Dunster, Somerset, England - Ada Gifford
Birth - about 1257 - Ofhouseofyester, , , Scotland - Maude (Matilde) de Vaux
Birth - about 1257 - Of, Acquitaine, , England - Margaret Dutton
Birth - about 1257 - Kinderton, Cheshire, England - William Mauduit
- Beatrix (Marguerite) de Geneva & Faucigny
- Mafalda Princess Of Portugal
- Maurice Fitzgerald
- Robert de Quincy
- Hugh Ferrers
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