Trevor was a son of
Sir John Trevor II (1596-1673) of
Trevalyn Hall,
Denbighshire and
Plas Teg,
Flintshire. His father was a
member of parliament under
James I and
Charles I, and sat also in the parliaments of
Oliver and of
Richard Cromwell, and was a member of the council of state during the
Commonwealth. In 1646, Trevor was elected
Member of Parliament for
Flintshire in the
Long Parliament and sat until the
Barebones Parliament of 1653. Thereafter he was re-elected MP for Flintshire in 1654 for the
First Protectorate Parliament, in 1656 for the
Second Protectorate Parliament and in 1659 for the
Third Protectorate Parliament. After filling several public positions under the Commonwealth and Protectorate he was a member of the council of state appointed in February 1660 and under
Charles II, he rose to a high position. Having purchased the office of
secretary of state he was knighted and entered upon its duties towards the end of 1668, just after he had helped to arrange an important treaty between England and
France. Trevor predeceased his father by a year, dying on 28 May 1672. ==Family==