The Barttelots settled at Stopham on the River Arun in west Sussex at the end of the fourteenth century and a member of that family was returned for the county in 1435.
Barttelot inherited the family estates on the death of his father in 1614 and was appointed a justice of the peace five years later. He presumably owed his return for Bramber in 1625 to his father-in-law, John Middleton, who had taken over control of the estates of the Shelley family, important local landowners who had represented the borough in 1604 and 1614. He may also have had the support of Arundel, who owned the borough. He left no mark on the records of the first Caroline Parliament. He was removed from the Sussex bench early in 1626, but this did not prevent his re-election for Bramber. During the 1626 Parliament he was added to a committee to consider two naturalization bills on 28 Mar. and attended one of its meetings.
Barttelot was restored to the Sussex commission of the peace by the autumn of 1626, and in September of that year he obtained a 21-year lease of lands that had come into the hands of the Crown due to his stepmother’s recusancy.
