The title of Baron Ailwyn was created in 1921 in the Peerage of the Unitd Kingdom and became extinct in 1988.
Barons Ailwyn (1921)
- Ailwyn Edward Fellowes, 1st Baron Ailwyn (1855-1924)
- Ronald Townshend Fellowes, 2nd Baron Ailwyn (1886-1936)
- Eric William Edward Fellowes, 3rd Baron Ailwyn (1887-1976)
- Carol Arthur Fellowes, 4th Baron Ailwyn (1896-1988)