Sackville Trevor was son of John Trevor of Trevalyn, Denbighshire, and the brother of Sir Richard Trevor, Sir John Trevor and Sit Thomas Trevor. He served with distinction under Admiral Howard of Effingham, and was knighted on 4 July 1604. He accompanied the future King Charles I to Spain in 1623.
Trevor married Lady Eleanor Bagnell, widow of Sir Henry Bagnall and daughter of Sir John Savage of Clifton Cheshire.
- W R Williams The Parliamentary History of the Principality of Wales
- Knights of England
- Willis, Browne (1750). Notitia Parliamentaria, Part II: A Series or Lists of the Representatives in the several Parliaments held from the Reformation 1541, to the Restoration 1660 .... London. pp. 229–239.
- Welsh Biography Online
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