Barrett was the last of a family which had acquired Belhus by marriage in 1397. At the age of just five he inherited substantial estates, not just in Essex but also in Berkshire and Hampshire.
Barrett’s property in Hampshire included Wolverton, ten miles from Whitchurch, for which borough he was returned in 1614.
In the summer of 1622 it was reported that Barrett aspired to become the next comptroller of the Household, but he lost out to (Sir) John Suckling*.
In the elections to the Short and Long Parliaments in 1640, Newburgh, as chancellor of the Duchy, nominated candidates in several boroughs, but many of them were unsuccessful.
