Henrietta Blount
- Yes, date unknownDrag or scroll to see more of the chart.
 | William Henry 11Th Baron Petre 1793-1850 |
| William Henry 11Th Baron Petre | |
| B: | 22 Jan 1793 |
| D: | 3 Jul 1850 |
| Robert Edward 10Th Baron Petre 1763-1809 |
| Robert Edward 10Th Baron Petre | |
| B: | 2 Sep 1763 |
| D: | 28 Mar 1809 |
| Anne (of Buckinham) Howard 1742-1787 |
| Anne (of Buckinham) Howard | |
| B: | 29 Aug 1742 |
| D: | 15 Jan 1787 |
| Robert Edward 9Th Baron Petre Abt 1742-1801 |
| Robert Edward 9Th Baron Petre | |
| B: | Abt Feb 1742 |
| M: | 19 Apr 1762 |
| D: | 2 Jul 1801 |
| Henrietta Blount -Yes, date unknown |
| Henrietta Blount | |
| D: | Yes, date unknown |
| Philip (of Buckinham) Howard 1688-Yes, date unknown |
| Philip (of Buckinham) Howard | |
| B: | 24 Jan 1688 |
| D: | Yes, date unknown |