Rashleigh belonged to the senior but less prominent branch of his family in Fowey. While the junior line prospered in trade and built up a dominant position in the town, their cousins settled for the role of minor gentry and lords of the manor of Trenant, where their seat of Coombe was situated. Besides Trenant, Rashleigh’s inheritance included almost 300 acres in Tywardreath and St. Austell parishes, and a quay in Fowey.
Rashleigh first became directly involved in parliamentary affairs during his term as Fowey’s portreeve in 1624, when he presided over the election of William Noye and Sir Robert Coke.
Rashleigh initially refused to compound for knighthood, but paid £17.10s. in 1633.
