In 1753 he became Governor of the British Leeward Islands , serving in the position until 1766 .
Thomas served as Deputy Governor of the Province of Pennsylvania between 1738 and 1747 .
In 1753 Thomas became Governor of the British Leeward Islands , serving in the position until 1766 .
Thomas served as Deputy Governor of the Province of Pennsylvania between 1738 and 1747 .