 He earned the affections of Lord Fairfax on account of his energetic nature and loyalty, and through Martin's growing influence Lord Fairfax relocated the proprietary's base of operations to Greenway Court in 1762 and made Martin steward and land agent of the proprietary.Martin took an active role in political and civil affairs within the proprietary's domain.He served as a vestryman for the Anglican Frederick Parish, and upon the creation of Hampshire County in 1754, he presided as the county's first justice and was further appointed the County Lieutenant.