My attempt at an ancestor chart:
2. Archibald Ralph Montagu-Stuart-Wortley-Mackenzie, 3rd Earl of Wharncliffe (17 Apr 1892-Sheffield Royal Infirmary 16 May 1953)
3. Lady Elfreda Wentworth-Fitzwilliam (19 Aug 1898-Carlton House, Wortley, 8 Nov 1979)
4. Francis John Montagu-Stuart-Wortley-Mackenzie, 2d Earl of Wharncliffe (9 Jun 1856-Wortley 8 May 1926)
5. Ellen Gallwey (d.London 12 Mar 1922)
6. William Charles de Meuron Wentworth-Fitzwilliam, 7th Earl Fitzwilliam (Point de Meuron, Canada 25 Jul 1872-15 Feb 1943)
7. Lady Maud Dundas (Upleatham 9 Jul 1877-15 Mar 1967)
8. Hon. Francis Dudley Montagu-Stuart-Wortley (23 Jul 1829-21 Oct 1893)
9. Maria Elizabeth Martin (d.26 Sep 1891)
10. Sir Thomas Lionel John Gallwey
11. Alicia Dorinda Le Fanu Macdougall
12. William Charles Wentworth-Fitzwilliam, Viscount Milton (27 Jul 1839-17 Jan 1877)
13. Laura Maria Theresa Beauclerk (Florence 3 Jan 1849-Wentworth 20 Mar 1886)
14. Lawrence Dundas, Marquess of Zetland (16 Aug 1844-11 Mar 1929)
15. Lady Lilian Lumley (30 Oct 1851-24 Dec 1943)
16. John Stuart-Wortley-Mackenzie, 2nd Lord Wharncliffe (Egham, Surrey 23 Apr 1801-Wortley Hall 22 Oct 1855)
17. Lady Georgiana Elizabeth Ryder (23 Apr 1804-London 22 Aug 1884)
18. William Bennet Martin, of Worsborough Hall
22. Peter Macdougall
24. William Thomas Spencer Wentworth-Fitzwilliam, 6th Earl Fitzwilliam (12 Oct 1815-20 Feb 1902)
25. Lady Frances Harriet Douglas (29 Sep 1819-15 Jun 1895)
26. Lord Charles Beauclerk (10 Oct 1813-2 Nov 1861)
27. Laura Maria Theresa Stopford (d.29 Sep 1858)
28. Hon. John Charles Dundas, of Woodhall (21 Aug 1808-14 Feb 1866)
29. Margaret Matilda Talbot (d.8 Dec 1907)
30. Richard George Lumley, 9th Earl of Scarbrough (Tickhill Castle 7 May 1813-Sandbeck 5 Dec 1884)
31. Frederica Mary Adeliza Drummond (16 Dec 1826-2 Apr 1907)
32. James Archibald Stuart-Wortley-Mackenzie, cr 1826 Baron Wharncliffe of Wortley (6 Oct 1776-Wharncliffe House 19 Aug 1845)
33. Lady Elizabeth Caroline Mary Crichton (5 Mar 1779-London 23 Apr 1856)
34. Dudley Ryder, 2nd Lord Harrowby, cr 1809 Earl of Harrowby (22 Dec 1762-26 Dec 1847)
35. Lady Susan Leveson-Gower (1772-26 May 1838)
48. Charles William Wentworth-Fitzwilliam, 5th Earl Fitzwilliam (4 May 1786-Wentworth Woodhouse 4 Oct 1857)
49. Hon. Mary Dundas (20 May 1787-1 Nov 1830)
50. George Sholto Douglas, 17th Earl of Morton (London 23 Dec 1789-London 31 Mar 1858)
51. Frances Theodora Rose (31 Aug 1798-London 12 Jul 1879)
52. William Beauclerk, 8th Duke of St.Albans (18 Dec 1766-London 17 Jul 1825)
53. Marie Janetta Nelthorpe (d.London 17 Jan 1822)
54. Edward Stopford
56. Lawrence Dundas, Earl of Zetland (10 Apr 1766-19 Feb 1839)
57. Harriot Hale (16 Jun 1769-18 Apr 1834)
58. James Talbot, of Knockmullen (1794-1852)
59. Mary Sutton
60. Frederick Lumley, of Tickhill Castle, 1834 Lumley-Savile (14 Jan 1788-27 Feb 1837)
61. Charlotte Mary Beresford (1795-1851)
62. Andrew Robert Drummond, of Cadland (28 Jul 1794-20 Jun 1865)
63. Lady Elizabeth Frederica Manners (10 Dec 1802-20 Mar 1886)
64. Hon. James Archibald Stuart-Wortley-Mackenzie (19 Sep 1747-1 Mar 1818)
65. Margaret Cunynghame (d.Jan 1808)
66. John Crichton, 2nd Lord Erne, cr 1789 Earl Erne of Crom Castle (ca 1738-15 Sep 1828)
67. Lady Mary Caroline Hervey (d.10 Jan 1842)
68. Nathaniel Ryder, cr 1776 Baron Harrowby, of Harrowby (3 Jul 1735-20 Jun 1803)
69. Elizabeth Terrick (d.24 Aug 1804)
70. Granville Leveson-Gower, 2nd Earl Gower, cr 1786 Marquess of Stafford (4 Aug 1721-26 Oct 1803)
71. Lady Susanna Stewart (d.15 Aug 1805)
96. William Wentworth-Fitzwilliam, 4th Earl Fitzwilliam (Milton 30 May 1748-Milton House 8 Feb 1833)
97. Lady Charlotte Ponsonby (29 Nov 1747-Milton House 13 May 1822)
98. Sir Thomas Dundas, 2nd Bt., 1st Baron Dundas of Aske (16 Feb 1741-14 Jun 1820)
99. Lady Charlotte Fitzwilliam (14 Jul 1746-11 Feb 1833)
100. Hon. John Douglas (1 Jul 1756-1 May 1818)
101. Lady Frances Lascelles (11 Jun 1762-31 Mar 1817)
102. Sir George Henry Rose, of Cuffnells (35 May 1770-17 Jun 1855)
103. Frances Duncombe
104. Aubrey Beauclerk, 5th Duke of St.Albans (3 Jun 1740-London 9 Feb 1802)
105. Lady Catherine Ponsonby (14 Oct 1742-4 Sep 1789)
106. John Nelthorpe, of Little Grimsby Hall
107. Mary Cracroft
112 – 113 = 98 – 99
114. John Hale (d.20 Mar 1806)
115. Mary Chaloner (1743-27 Oct 1803)
116. Matthew Talbot, of Castle Talbot (d.27 Oct 1795)
117. ___ D’Arcy
118. Edward Sutton, of Summer Hill
120. Hon. Frederick Lumley (17 Oct 1761-20 Sep 1831)
121. Harriet Anne Boddington (d.20 Jul 1810)
122. Rt. Rev. George Beresford, Bp of Kilmore and Ardagh (19 Jul 1765-16 Oct 1841)
123. Frances Bushe (d.May 1843)
124. Andrew Berkeley Drummond, of Cadland (11 Sep 1755-27 Dec 1833)
125. Lady Mary Perceval (15 Jul 1758-18 Sep 1839)
126. John Henry Manners, 5th Duke of Rutland, etc (Rutland House 4 Jan 1778-Belvoir Castle 20 Jan 1857)
127. Lady Elizabeth Howard (13 Nov 1780-Belvoir Castle 28 Nov 1825)
128. John Stuart, 3rd Earl of Bute, Viscount Kingarth, and Lord Mountstuart, Cumra and Inchmarnock, Prime Minister of Great Britain 1762-3 (Edinburgh 25 May 1713-London 10 Mar 1792)
129. Mary Wortley-Montagu, who was cr 1761 Baroness Mount Stuart of Wortley (Pera Feb 1718-Isleworth 6 Nov 1794), of the Earls of Sandwich
130. Sir David Cunynghame, 3rd Bt. (1 Aug 1700-10 Oct 1767)
131. Lady Mary Montgomerie (20 Nov 1704-Jun 1777)
132. Abraham Creighton [Crichton], of Crom Castle, cr 1768 Baron Erne of Crom Castle (ca 1700-10 Jun 1772)
133. Elizabeth Rogerson (d.6 Aug 1760)
134. Rt. Rev. Hon. Frederick Augustus Hervey, Bishop of Derry, suc 1779 as 4th Earl of Bristol, 1799 5th Lord Howard de Walden (1 Aug 1730-Albano 8 Jul 1803)
135. Elizabeth Davers (d.Ickworth 19 Dec 1800), dau of Sir Jermyn Davers, 4th Bt.
136. Sir Dudley Ryder (4 Nov 1691-25 May 1756)
137. Ann Newnham (d.9 May 1774)
138. Rt. Rev Richard Terrick, Bp of London (bap 20 Jul 1710-31 Mar 1777)
139. Tabitha Stainforth
140. John Leveson-Gower, 2nd Lord Gower, cr 1746 Earl Gower (10 Aug 1694-25 Dec 1754)
141. Lady Evelyn Pierrepont (6 Sep 1691-26 Jun 1727);
142. Alexander Stewart, 6th Earl of Galloway (ca 1694-Aix-en-Provence 24 Sep 1773)
143. Lady Catherine Cochrane (d.Bath 15 Mar 1786)
192. William Fitzwilliam, 3rd Earl Fitzwilliam [I], cr 1746 Earl Fitzwilliam of Norborough [GB] (15 Jan 1720-10 Aug 1756)
193. Lady Anne Watson-Wentworth (d.29 Aug 1769)
194. William Ponsonby, 2nd Earl of Bessborough (1704-11 Mar 1793)
195. Lady Caroline Cavendish (22 May 1719-20 Jan 1760)
196. Sir Lawrence Dundas, of Kerse, 1st Bt 1762 (ca 1710-21 Sep 1781)
197. Margaret Bruce (d.11 Oct 1802) , maternal gdau of 4th Lord Balfour of Burleigh
198 – 199 = 192 - 193
200. James Douglas, 14th Earl of Morton (1702-Chiswick 12 Oct 1768)
201. Bridget Heathcote (d.London 2 Mar 1805)
202. Edward Lascelles, of Harewood House, cr 1796 Baron Harewood, of Harewood, cr 1812 Earl of Harewood and Viscount Lascelles (7 Jun 1740-3 Apr 1820)
203. Anne Chaloner (d.22 Feb 1805), dau of # 230 - 231
204. George Rose, of Cuffnells (17 Jun 1744-13 Jan 1818)
205. Theodora Duer
206. Thomas Duncombe, of Duncombe Park (ca 1724-23 Nov 1779)
207. ___, dau of Sir Philip Jennings Clerke, Bt.
208. Lord Vere Beauclerk, cr 1750 Lord Vere of Hanworth (14 Jul 1699-London 2 Oct 1781)
209. Mary Chambers (d.London 21 Jan 1783)
210 – 211 = 194 - 195
214. Robert Cracroft, of Hackthorn
224 - 225 = 196 - 197
226 – 227 = 192 – 193
230. William Chaloner, of Gisborough (1714-1754)
231. Mary Finny
232. Roger Talbot, of Ballynamony
233. Elizabeth Fitzpatrick
234. John D’Arcy, of Kiltullagh
240. Richard Lumley, 4th Earl of Scarbrough, d.London 12 May 1782
241. Barbara Savile (d.22 Jul 1797)
242. John Boddington
244. Hon. John Beresford (14 Mar 1738-5 Nov 1805)
245. Anne Constantia de Ligondes (d.26 Oct 1770 [1772, per Collins]), whose paternal grandmother was Dowager Viscountess Kilmorey and also Dowager Css of Huntingdon
246. Gervais Parker Bushe, of Kilfane (d.1792/3)
247. Mary Grattan
248. Hon. Robert Drummond, of Cadland (13 Nov 1728-19 Jan 1804)
249. Winifred Thompson (d.2 Apr 1791)
250. John Perceval, 2nd Earl of Egmont, cr 1762 Lord Lovel and Holland, Baron Lovel and Holland of Enmore [GB] (24 Feb 1711-20 Dec 1770)
251. Catherine Compton (4 Jun 1731-11 Jun 1784), cr 1770 Baroness Arden of Lohort Castle [I], with remainder to heirs male of her body; she was sister of 7th & 8th Earls of Northampton
252. Charles Manners, 4th Duke of Rutland, etc (15 Mar 1754-Phoenix Lodge, Dublin 24 Oct 1787)
253. Lady Mary Isabella Somerset (1 Aug 1756-London 2 Sep 1831)
254. Frederick Howard, 5th Earl of Carlisle, etc (London 28 May 1748-Castle Howard 4 Sep 1825)
255. Lady Margaret Caroline Leveson-Gower (2 Nov 1753-Castle Howard 27 Jan 1824), dau of # 70 - 71