Wallis rose from obscurity to become one of King’s Lynn’s foremost merchants. In 1591 he was made free of the Lynn corporation through the patronage of another merchant, John Nelson, who later became his father-in-law. He soon became the most prominent merchant-shipper in Lynn.
By the mid-1590s Wallis was an active corporation official. Besides acting as an auditor for many years, he also served as corn-supervisor, mayor, and town representative.
Wallis received many of the benefits associated with membership of the corporation. In 1601 he leased a warehouse, and 20 years later, pastures just outside the town walls.
Wallis was elected to the last two Jacobean parliaments. He is not mentioned in the records for that of 1621, but Lynn’s Hall Books confirm his attendance. He may have used the time to arrange a pass for himself and his son, John, to travel on business to Dort.
Wallis’s will, dated 24 Mar. 1633, a few days before his death, divided his properties and houses in Old Wingate, Chequer Street and Baxter Row, between his children, and left the remainder of the estate to his widow.
