Family: Marmaduke de THWENGE, 1st Baron of Twenge / Isabel de ROSS (F9901)
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Male
Marmaduke de THWENGE, 1st Baron of Twenge
Birth Sep 1256 Kilton Castle, Cleveland, Yorkshire, England 
Death Bef 26 Feb 1323 Burial Marriage Father Marmaduke de THWENGE, Lord Kelton | F9933 Group Sheet Mother Lucy de BRUS | F9933 Group Sheet
Female
Isabel de ROSS
Birth Abt 1280 Igmanthorp, Yorkshire, England Death Yes, date unknown Burial Father William de ROSS | F5121 Group Sheet Mother Eustace FITZHUGH OR FITZRALPH | F5121 Group Sheet
Female
Lucia de THWENGE
Birth Abt 1278 Kilton Castle, Cleveland, Yorkshire, England Death Yes, date unknown Burial Spouse Robert LUMLEY | F9900 Marriage
Male
Marmaduke de THWENGE, Master of Kilton
Birth Abt 1280 Kilton Castle, Cleveland, Yorkshire, England Death 11 Sep 1297 Stirling Bridge, Stirling, Scotland Burial
Male
William de THWENGE, 2nd Baron of Thwenge
Birth Abt 1285 Kilton Castle, Cleveland, Yorkshire, England Death Bef 19 Nov 1340 Burial Handale Church, Yorkshire North Riding, England
Male
Robert de THWENGE, 3rd Baron of Thwenge
Birth Abt 1293 Kilton Castle, Cleveland, Yorkshire, England Death 22 Apr 1344 Burial
Female
Margaret de THWENGE
Birth Abt 1295 Kilton Castle, Cleveland, Yorkshire, England Death Yes, date unknown Burial
Female
Katherine de THWENGE
Birth Abt 1297 Kilton Castle, Cleveland, Yorkshire, England Death Bef 28 May 1374 Burial
Male
Thomas de THWENGE, 4th Baron of Thwenge
Birth Abt 1299 Kilton Castle, Cleveland, Yorkshire, England Death 28 May 1374 Burial Thwing Church, Yorkshire East Riding, England