Baron Grandison was by modern doctrine a title in the Peerage of England created for two brothers, Sir Otho Grandison and Sir William Grandison, who were summoned to Parliament in 1299. Any hereditary barony for Sir Otho lapsed on his death in 1328, as did that for Sir William on the death of his grandson Thomas Grandison in 1375.
Sir Piers Grandison (died 1258)
- Otho Grandison(died 1328)
- William Grandison (died 1335)
- Complete Peerage, 2nd edition, Volume VI, P69
- Audrey Erskine, Grandison, John (1292–1369), Oxford Dictionary of National Biography, Oxford University Press, 2004; online edition (subscription required). Retrieved 2020-02-29.