Lawrence’s great-grandfather, Sir Oliver Lawrence†, purchased the ex-monastic manor of Creech Grange in 1540, and represented the county in the 1558 Parliament. Lawrence himself was returned for Wareham with his kinsman Sir Nathaniel Napper in 1626, and was appointed to a single committee, this being for a bill to restrict the making of malt to certain times of the year (9 March). He is not known to have stood for re-election in 1628, when the seat went to Sir John Meller.
In 1631, soon after succeeding to his father’s estates, Lawrence received a summons for having failed to take up a knighthood at the Coronation in 1626, even though he had not then been the head of his family. He compounded for his offence, paying £10. He was appointed a magistrate in 1637, and as sheriff five years later helped execute the Dorset commission of array, for which service he was later knighted at Oxford.
