He operated from London as an agent to Barbados and the Leeward Islands for Sir William Stapleton, 1st Baronet.
[3] Following the conclusion of the Williamite War in Ireland, Trant was attainted by William III of England, losing his baronetcy and entire estate.
A patent which would have made Trant a baron in the Jacobite peerage as Lord Maryborough was found in Dublin, waiting to be signed by the now-exiled James II.
Trant died three years later in France having fled to the country with James II.
His brother, Dominick, married a sister of Sir Stephen Rice.