Sir William FitzWilliam
- DECEASED(
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- 1 Sir William FitzWilliam [1] d. DECEASED
- Agnes Metham b. Abt 1234 d. 1280
- 2 William FitzWilliam [1.1] b. Abt 1254 d. Aft 11 Apr 1340
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- 3 sir, William FitzWilliam, V [1.1.1] b. Abt 1295 d. 22 Mar 1322
- 3 Sir, John FitzWilliam, I [1.1.2] b. Abt 1298 d. 10 Aug 1349
- Joan RERESBY b. 1302 d. 1342
- 4 Thomas FitzWilliam [1.1.2.1] b. 1326 d. 1373
- 4 Sir, John FITZWILLIM, II, Knt, [1.1.2.2] b. Feb 1328 d. 22 Feb 1384
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- 4 Joan Fitzwilliam [1.1.2.3] b. 1329 d. DECEASED
- 4 Edmond FitzWilliam [1.1.2.4] b. 1329 d. DECEASED
- 4 William Fitz William [1.1.2.5] b. 1331 d. 1340
- 4 Elizabeth Fitzwilliam [1.1.2.6] b. 1333 d. DECEASED
- 4 Elizabeth Fitswilliam [1.1.2.7] b. 1337 d. 1416
- 4 daughter William [1.1.2.8] d. 22 Feb 1383
- 4 Thomas FitzWilliam [1.1.2.1]
- 3 Thomas Fitzwilliam [1.1.3] b. Abt 1300 d. DECEASED
- + Lady Elizabeth Maplethorpe b. Abt 1304
- + Lady Elizabeth Maplethorpe b. Abt 1304
- 3 Joan Fitzwilliam [1.1.4] b. Abt 1304 d. DECEASED
- + William Trusbut d. DECEASED
- + William Trusbut d. DECEASED
- 3 Isabel FitzWilliam [1.1.5] b. Abt 1306 d. Aft 1348
- + William Bingham, , Lord of Bingham b. Abt 1300
- + William Bingham b. 1310 d. DECEASED
- + William Bingham, , Lord of Bingham b. Abt 1300
- 3 sir, William FitzWilliam, V [1.1.1]
- 2 William FitzWilliam [1.1]