The Pettus family had been tailors in Norwich for at least three generations and had lived in the parish of St. Simon and St. Jude since Pettus’ namesake and grandfather purchased a house there in 1536.
During the 1604 session, Pettus was appointed to 13 bill committees, and also to the joint conference to meet the king at Whitehall on the Union (20 April).
In the 1605-6 session, Pettus was named to five bill committees. Two were for measures that he had been ordered to consider in 1604 - the Rous and skinners’ bills.
When Parliament reassembled for the third session in November 1606, Pettus was again appointed to consider a measure concerned with alehouses, being named on 3 Dec. to the committee for restraining the sale of beer and ale to unlicensed alehousekeepers.
Pettus served as mayor of Norwich in 1608-9, when he oversaw the construction of the fish stalls by Fye Bridge, near his house in Elm Street.
In 1610 Pettus paid for the erection of a structure over the spring at Bishopgates, in Norwich, which was to remain closed in order to ensure the cleanliness of the water.
