John Trevor (1563–1630)

His father had greatly enhanced his family's fortunes in the service of his wife's cousin, Sir Richard Sackville.

Likely through Buckhurst's influence, he became secretary to Charles Howard, 1st Earl of Nottingham, as did his brothers Richard and Sackville.

a year, Trevor took advantage of the many opportunities to augment this, which doubtless provided him with his largest source of income until his resignation in 1611.

In 1603 alone, he was knighted by King James I at the Tower of London, he was granted the office of Steward and Receiver at Windsor Castle, he was appointed Keeper of Upnor Castle and also Keeper of the house and royal park of Oatlands (where Trevor lived for much of the rest of his life).

He died on 20 February 1630 at Plas Teg and was buried in St Cyngar's Church in Hope, Flintshire.