- Offe Jensen Dyre
- William de Ferrers
Birth - about 1240 - Of, Groby, Leicestershire, England - Leugia de Ceva
- Fernando Prince Of Castile & Leon
Birth - about 1240 - Of, Burgos, Burgos, Spain - John Fitzjohn
Birth - about 1240 - Of, Shere, Surrey, England - Isabel Mrs de Toeni
- Hugh Xii de Lusignan
Birth - about 1240 - , Angouleme, Chrnt, France - Thomas Le Bigod
- Alexander Stewart
Birth - about 1240 - Of, Crawford, Lanarkshire, Scotland - Margaret Venables
Birth - about 1240 - Of, Kinderton, Cheshire, England - Ralf Of Aldithley
Death - before 1240 - (Sp Vp) - Clemence de Banastre
Birth - about 1240 - Mollington, BANASTRE, Cheshire, England - Andrew de Trevelyan
Birth - about 1240 - Of, Yarnscombe, Devonshire, England - John De Trafford
Birth - about 1240 - Trafford, Lancashire, England - William "Le Hardi" Douglas
Birth - about 1240 - Of, Douglas - Robert Fitzroger Clavering
Birth - about 1240 - , CLAVERING, Essex, England - Robert Neville
Birth - about 1240 - , Raby, Durham, England - Jens de Capellegord
- Niels Nielsen Saltensee
- Esge Olufsen Bild
- Peder Assersen Hvide
- Dominis Corvinus von Ritzerow
- Rabbi Avraham Ashkenazi Treves
Birth - 1240 - Troyes, France - Erik Knudsen Gyldenstierne
Birth - about 1240 - Aagaard, Thisted, Denmark - Gottschalk II. von Rantzau
Birth - about 1240 - Denmark - Gottschalk I. von Rantzau
- Joan Multon
Birth - about 1240 - <, Shipbrook, Cheshire, Eng> - Mrs. Margaret De Trafford
Birth - about 1240 - Of Trafford, Lancashire, England - Simon Vi De Montfort
Birth - 1240 - Near, Brindisi, Apulia, Italy - Agnes (Anna), Princess France
- Marjorie (Bridget) Comyn
Birth - about 1240 - Of, Whitewich Castle, Leicestershire, England - Nicole D' Aubigny (Albini)
Death - 1240 - Dudley Castle, Strafford, Eng - Hugh de Venables
Birth - about 1240 - , Kinderton, Cheshire, Eng - Cecilia de Baliol
Birth - about 1240 - Bernard Castle, Gainford, Durham, England - Giles Ii de Berkeley
Birth - 1240 - Of, Coberley, Gloucestershire, England - Hugh Wake
Birth - about 1240 - , Of Deeping, Lincolnshire, England - Walter de Heneage
Birth - about 1240 - Of, , Lincolnshire, England - William Devereux
Birth - about 1240 - Of, Lyonshall, Hereford, England - Alice Grandison
Birth - about 1240 - Of Herefordshire, England - Peter de Montford
Birth - about 1240 - Of, Beaudesert Castl, Warwickshire, England - Randolph Darce
Birth - about 1240 - <, Shipbrook, Cheshire, Eng> - Helen (unknown)
- Nicholas Plantagenet
- William de Northorpe
Birth - about 1240 - Mirfield, County Yorkshire, England - Hugh Fitzhugh
Birth - about 1240 - Of Ravensworth, Yorkshire, England - John Dunbar
- Isabella (Isabel) D' Albini (Aubigny)
- Erzsebet Princess Of Kumans
Birth - 1240 - Of, , Cumania - Istvan V, King Hungary
Birth - about 1240 - Of, Buda, Pest, HUNGARY - Joane Quincy
Birth - about 1240 - Of, Blisworth, Northamptonshire, England - Agnes Bacon
Birth - about 1240 - Of, Letheringsett, Norfolk, England - Alan de Peninton
- Alice Oxton
Birth - about 1240 - Of Kynderton, Cheshire, England - Isabel Marshall
- John Fitzalan
- Llewelyn Ap Iorwerth
Death - 11 April 1240 - Aberconwy, Arllechwedd Isaf, Caernarvonshire, Wales - Isabel de Clare
Birth - May 1240 - Of, Tunbridge, Kent, England - William Plantagenet (War
- John de Lacy
- Margaret Princess Of England
- Branca Princess Of Portugal
- Blanche Princess Of France
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