 Lawes later married Elizabeth Lawley (1690-1725).Their youngest surviving daughter, Judith Maria Lawes, married Simon Luttrell, 1st Earl of Carhampton and so became both wife and mother of the Earls of Carhampton.At Temple Hall Lawes experimented with a variety of crops and introduced the very lucrative coffee growing into the island in 1721 according to some sources or 1728 according to others.