George Grenfell
George Grenfell, Lord de Grave (b 1756, d 1805), not to be confused with his son, George Grey Grenfell, was the 16th Baron de Grave.
He and his wife, Caroline, produced four children:
- the sensible heir George Grey Grenfell
- the restless adventurer Leander Grenfell
- the younger son Piers Grenfell
- sole daughter Sybilla Grenfell.
He was the younger brother of Charlotte, Lady Granville.
The Grenfell men are known to suffer from weak chests and hearts.