 William Shirley to command the garrison at Fort Halifax, established near the junction of the Sebasticook and Kennebec Rivers.After a few years, Lithgow became a justice of the peace and then appointed as a judge for the court of Common Pleas, in Lincoln County.He died December 20, 1798 and it was spoken of him that "he was a cultivated and courteous gentleman, as well as an energetic and faithful officer."