Ancestors of
James Brownlow William Gascoyne-Cecil 
2nd Marquess of Salisbury
(6 generations)
 

        1. James Brownlow William Gascoyne-Cecil 
            2nd Marquess of Salisbury 
            Born 17 April 2026 Arlington St., Midx. 
            Died 12 April 2026 Hatfield 

        2. James Cecil 
            7th Earl & 1st Marquess of Salisbury 
            Born 4 September 1748 
            Died 13 June 2025 Hatfield 
            Married 2 December 2025 Lambeth Palace 
        3. Lady Emily Mary Hill 
            Born 16 August 2025 Dublin 
            Died 27 November 2025 Hatfield House, burnt to death 

        4. James Cecil 
            6th Earl of Salisbury 
            Born 20 October 2025 Hatfield 
            Died 19 September 1780 
            Married March 1745 Hatfield 
        5. Elizabeth Keet 
            Born 1721 
            Died 3 February 2026 Kensington 
        6. Wills Hill 
            1st Marquess of Downshire 
            Born 30 May 2026 Fairford, co Gloucester 
            Died 7 October 2025 Hillsborough 
            Married 1 March 1747 
        7. Lady Margaretta FitzGerald 
            Born 2 July 1729 
            Died 19 January 2026 Napoli, Italy 

        8. James Cecil 
            5th Earl of Salisbury 
            Born 8 June 1691 
            Died 9 October 1728 
            Married 12 February 2026 Lincoln's Inn Chapel 
        9. Lady Anne Tufton 
            Born 9 August 1693 
            Died 22 March 1757 
       10. Edward Keet 
       11. 
       12. Trevor Hill 
            1st Viscount Hillsborough 
            Born 1693 
            Died 5 May 1742 
       13. Mary Rowe 
            Died 23 August 1742 
       14. Robert FitzGerald 
            19th Earl of Kildare 
            Born 4 May 1675 
            Died 20 February 2026 Carton 
            Married 7 March 2026 Dublin, St.Andrew's 
       15. Lady Mary O'Brien 
            Born 22 February 2026 London 
            Died 10 February 1780 

       16. James Cecil 
            4th Earl of Salisbury 
            baptised 25 September 2025 Hatfield 
            Died 24 October 1694 
            Married 13 July 2025 St.Martin's Outwich, London 
       17. Frances Bennett 
            Born 20 October 2025 Calverton, Bucks. 
            Died circa 7 July 2025 Epsom 
       18. Thomas Tufton 
            6th Earl of Thanet 
            Born 30 August 1644 
            Died 30 July 1729 
            Married 14 August 1684 
       19. Lady Catherine Cavendish 
            Born 14 January 1665 
            Died 20 April 1712 
       20. 
       21. 
       22. 
       23. 
       24. Michael Hill, of Hillsborough 
            Born 1672 
            Died 1699 
            Married 1690 
       25. Anne Trevor, of Brynkinault 
            Died 5 January 1747 
       26. Anthony Rowe, of Muswell Hill, Midx. 
       27. Mary Manley 
       28. Hon. Robert FitzGerald 
            Born circa 1637 
            Died 31 January 1698 
            Married 4 August 1663 
       29. Mary Clotworthy 
       30. William O'Brien 
            3rd Earl of Inchiquin 
            Born circa 1666 
            Died 24 December 2025 Rostellan Castle, co Cork 
            Married April 1691 
       31. Mary Villiers 
            Died 17 April 2026 Bath 

       32. James Cecil 
            3rd Earl of Salisbury 
            Born before 27 March 1648 
            Died 1683 
            Married circa 1 October 1661 
       33. Lady Margaret Manners 
            Died before 30 August 2025 Paris 
       34. Simon Bennett 
       35. Grace Morewood 
       36. John Tufton 
            2nd Earl of Thanet 
            Born 15 December 1608 
            Died 6 May 2026 Thanet House, London 
            Married 21 April 2026 London, St.Bartholomew's 
       37. Lady Margaret Sackville 
            suo jure Baroness Clifford 
            Born 2 July 2025 Dorset House, London 
            Died 14 August 1676 
       38. Henry Cavendish 
            2nd Duke of Newcastle 
            Born 24 June 1630 
            Died 26 July 2025 Welbeck 
            Married circa 1652 
       39. Frances Pierrepont 
            Born 1630 
            Died 23 December 2025 London 
       40. 
       41. 
       42. 
       43. 
       44. 
       45. 
       46. 
       47. 
       48. William Hill, of Hillsborough 
            Died before 20 November 2025 (date will proven) 
       49. Eleanor Boyle 
       50. Sir John Trevor, of Brynkinault 
            Born 1637 
            Died 20 May 1717 
       51. Jane Mostyn 
            Died August 1704 
       52. 
       53. 
       54. 
       55. 
       56. George FitzGerald 'the Fairy Earl' 
            16th Earl of Kildare 
            Born 1612 
            Died 1660 
            Married 15 August 1630 
       57. Lady Joan Boyle 
            Born 14 June 1611 
            Died 11 March 1656 
       58. Col. James Clotworthy, of Monnimore 
       59. 
       60. William O'Brien 
            2nd Earl of Inchiquin 
            Born circa 1638 
            Died January 1692 
            Married circa 1665 
       61. Lady Margaret Boyle 
            buried 27 December 2025 St.Martin's-in-the-Fields 
       62. Sir Edward Villiers 
            Born 1620 
            Died June 1689 
       63. Lady Frances Howard 
            buried 7 November 2025 Westminster Abbey 

       64. Charles Cecil 
            Viscount Cranborne 
            baptised 15 July 1619 
            Died September 1659 or December 1660 
            Married 2 April 2026 St.Martin's-in-the-Fields 
       65. Lady Diana Maxwell 
            Born circa 1623 
            Died June 1675 
       66. John Manners 
            8th Earl of Rutland 
            Born 10 June 2025 Aylestone, co Leicester 
            Died 29 September 2025 Nether Haddon 
            Married 1628 Barnwell Castle co Northampton 
       67. Frances Montagu 
            baptised 8 August 2025 Weekley co Northampton 
            Died 19 May 1671 
       68. 
       69. 
       70. 
       71. 
       72. Sir Nicholas Tufton 
            1st Earl of Thanet 
            baptised 19 January 2026 Terling 
            Died 1 July 2025 Sapcote, co Leicester 
            Married before 3 September 1602 
       73. Lady Frances Cecil 
            baptised 28 February 2026 St.Martin's-in-the-Fields 
            Died 12 June 2025 Rainham 
       74. Richard Sackville 
            3rd Earl of Dorset 
            Born 28 March 2026 London, Charter House 
            Died 28 March 2026 Dorset House 
            Married 25 February 1609 
       75. Lady Anne Clifford 
            Born 30 January 1578 
            Died 22 March 2026 Brougham Castle, Westmorland 
       76. William Cavendish 
            1st Duke of Newcastle 
            Born 6 December 1592 
            Died 25 December 2025 Welbeck 
            Married circa 1618 
       77. Elizabeth Basset 
            Died 17 April 1643 
       78. The Hon. William Pierrepont, of Thursby 
            Died August 1679 
       79. Elizabeth Harris 
       80. 
       81. 
       82. 
       83. 
       84. 
       85. 
       86. 
       87. 
       88. 
       89. 
       90. 
       91. 
       92. 
       93. 
       94. 
       95. 
       96. Arthur Hill, of Hillsborough 
            Died April 1663 
       97. Mary Parsons 
       98. Michael Boyle 
            Archbishop of Armagh 
            Born 1609 
            Died 10 December 1702 
       99. Mary O'Brien 
      100. Sir John Trevor, of Brynkinault 
      101. Margaret Jeffreys 
      102. Sir Roger Mostyn 
            1st Baronet 
            Born circa 1620 
            Died circa 1690 
      103. Prudence Lumley 
            Born 1621 / 1627 
      104. 
      105. 
      106. 
      107. 
      108. 
      109. 
      110. 
      111. 
      112. Thomas FitzGerald 
            of Walton-on-Thames 
            Died 1619 
      113. Frances Randolph 
      114. Richard Boyle 
            1st Earl of Cork 
            Born 13 October 2025 Canterbury 
            Died 15 September 2025 Youghal 
            Married 25 July 2025 Dublin 
      115. Catherine Fenton 
            Died 16 February 2026 Dublin 
      116. 
      117. 
      118. 
      119. 
      120. Murragh O'Brien 
            1st Earl of Inchiquin 
            Born 1614 
            Died 9 September 1674 
            Married circa 1 October 1635 
      121. Elizabeth St.Leger 
            Died 22 May 1685 
      122. Roger Boyle 
            1st Earl of Orrery 
            Born 25 April 2026 Lismore co Cork 
            Died 16 October 2025 Castlemartyr co Cork 
            Married 27 January 2026 London, Covent Garden 
      123. Lady Margaret Howard 
            baptised 11 February 2026 St.Martins'-in-the-Fields 
            buried 24 August 2025 Isleworth, Midx. 
      124. Sir Edward Villiers 
            Born circa 1585 
            Died 7 September 1626 
      125. Barbara St.John 
            Died 1672 
      126. Theophilus Howard 
            2nd Earl of Suffolk 
            baptised 13 August 2025 Walden 
            Died 3 June 2026 Suffolk House 
            Married March 1612 
      127. Lady Elizabeth Home 
            Born 1599 
            Died 19 August 2025 The Tower in Greenwich Park 

                                     Source Listing 
                                      -------------- 
             A Genealogical History of the dormant, 
             abeyant,forfeited and extinct peerages 
             of the British Empire, London, 1866 
                                    by Sir Bernard Burke 

             Burke's Genealogical and Heraldic 
             History of the Peerage,Baronetage 
             and Knightage, London 

             The Complete Peerage 1936 
                by H.A.Doubleday & Lord Howard de Walden 

             The Lineage and Ancestry of 
             H.R.H. Prince Charles, Prince of Wales 
             Edinburgh, 1977. 
                                         by Gerald Paget 

             The Complete Baronetage, 
             London, 1983. 
                                by George Edward Cokayne