| Birth |
24 Mar 1734 |
Althorpe, Northamptonshire, England |
| Died |
1 Aug 1808 |
| |
| Father |
Charles (3rd duke of malborough) Spencer (maid. name II), b. 1706, Althrope Manor, Brington, Northamptonshire, England |
| Relationship |
natural |
| Mother |
Elizabeth Trevor, b. 1715, Bromham, Wiltshire, England |
| Relationship |
natural |
| Married |
23 May 1732 |
East Baronet, Herfordshire, England |
| |
| Family 1 |
Frederick St John (maid. name 2nd Viscount Bolingbroke), b. 21 Dec 1732 |
| Children |
| | 1. George RIchard St John (maid. name 3rd Viscount Bolingbroke), b. 5 Mar 1761 |
| | 2. Frederick St John, b. 20 Dec 1765 |
|
| |
| Family 2 |
Topham Beauclerk, b. 22 Dec 1739 |
| Children |
| | 1. Anne Beauclerk, b. 1764 |
| | 2. Mary Day Beauclerk, b. 1766 |
| | 3. Elizabeth Beauclerk, b. 20 Aug 1766 |
| | 4. Charles George Beauclerk, b. 1774 |
|
| |