Sir Henry Algernon Percy, 5th Earl of Northumberland, was born 13 January 1477 in Alnwick Castle, Northumberland, England, United Kingdom to Henry Percy, 4th Earl of Northumberland (c1449-1489) and Maud Herbert (c1448-c1485) and died 19 May 1527 Wressle, Yorkshire, England, United Kingdom of unspecified causes. He married Catherine Spencer (c1477-1542) .
Children
| Name | Birth | Death | Joined with |
| Henry Algernon Percy, 6th Earl of Northumberland (1502-1537) | |||
| Thomas Percy (c1504-1537) | 2 June 1537 Tyburn, United Kingdom | Eleanor Harbottle (c1504-) | |
| Ingelram Percy (c1505-1538) | |||
| Margaret Percy (c1508-1540) | 1508 | 1540 | Henry Clifford, 1st Earl of Cumberland (c1493-1542) |
| Maud Percy (c1510-) | |||
Footnotes (including sources)
| ‡ General |
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