Section DS: Descendants of Simon de Beauchamp

David Thaler
18043 NE 132nd St, Redmond WA 98052
Send questions and corrections to: dthaler@microsoft.com

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Generation One

1. SIMON1 DE BEAUCHAMP was born between 1116 and 1182, and died between 1175 and 1292. He married ISABEL _____. [6]
Child:
+2i.SIR WILLIAM2 DE BEAUCHAMP of Bedfordshire, England, United Kingdom, b. about 1186; d. after 28 Dec. 1260; m. about Jan. 1220 (QG-31) IDA (OR IDONEA) DE LONGESPEE, d. after 1266/7[1], daughter of (QG-21) William, Earl of Salisbury and (AHQ-4) Ela (of SALISBURY), Countess of Salisbury.

Generation Two

2. SIR WILLIAM2 DE BEAUCHAMP (Simon1) of Bedfordshire, son of (1) Simon1 and Isabel (_____) DE BEAUCHAMP, was born about 1186[6], and died between 28 Dec. 1260 and 31 Dec. 4095[6]. He married about Jan. 1220, (QG-31) IDA (OR IDONEA) DE LONGESPEE[6], daughter of (QG-21) William, Earl of Salisbury and (AHQ-4) Ela (of SALISBURY), Countess of Salisbury, who died after 1266/7[1]. [8, 6]
Children:
+3i.MAUD3 DE BEAUCHAMP, d. in April 1273; m. before 1257 (LQ-6) ROGER DE MOWBRAY of Thirsk, Yorkshire, England, b. about 1220[7], d. in Oct. 1263[7], son of (LQ-5) William and Avice (of ARUNDEL) DE MOWBRAY.
+4ii.BEATRICE DE BEAUCHAMP, d. about 1280/1; m. before 1264 (PG-2) SIR THOMAS FITZ OTES of Mendlesham, Suffolk, England, b. about 1231[1], d. before 28 March 1274[1], son of (PG-1) Otes FITZ WILLIAM.

Generation Three

3. MAUD3 DE BEAUCHAMP (William2, Simon1), daughter of (2) Sir William2 and (QG-31) Ida (or Idonea) (de LONGESPEE) (DE SOMERY), was born between 1192 and 1243, and died in April 1273[7]. She married before 1257, (LQ-6) ROGER DE MOWBRAY[7] of Thirsk, son of (LQ-5) William and Avice (of ARUNDEL) DE MOWBRAY, who was born about 1220[7], and died in Oct. 1263[7]. [3, 7]
Child: See (LQ-6) Roger de MOWBRAY
4. BEATRICE3 DE BEAUCHAMP (William2, Simon1), daughter of (2) Sir William2 and (QG-31) Ida (or Idonea) (de LONGESPEE) (DE SOMERY), was born between 1190 and 1250, and died between 1271 and 1291[1]. She married before 1264, (PG-2) SIR THOMAS FITZ OTES[4] of Mendlesham, son of (PG-1) Otes FITZ WILLIAM, who was born about 1231[1], and died before 28 March 1274[1]. [2, 8, 5]
Child: See (PG-2) Sir Thomas FITZ OTES


1. Frederick Lewis Weis, "Ancestral Roots of Certain American Colonists", 7th ed. (Baltimore: Genealogical Publishing Co., 1999).
2. Ibid., (122A-30).
3. Aileen Lewers Langston and J. Orton Buck, Jr., "Pedigrees of Some of the Emperor Charlemagne's Descendants, Vol. II" (Baltimore: Genealogical Publishing Co., 1974), 56.
4. Douglas Richardson, "Plantagenet Ancestry" (Baltimore: Genealogical Publishing Co., 2004), 135.
5. Ibid., 135, 529.
6. Ibid., 528.
7. Ibid., 529.
8. Gary Boyd Roberts, "Royal Descents of 500 Immigrants" (Baltimore: Genealogical Publishing Co., 2002), 352, 361, 363.