Hammon’s paternal grandfather acquired Acrise, near Dover, early in Henry VIII’s reign. His father, a Marian exile, sat for West Looe in 1572.
Hammon’s appointment as a Dorset piracy commissioner in 1605 suggests that he was then living with his widowed mother-in-law at Athelhampton. As a convicted recusant, she found it advisable to use Hammon’s name when making leases of her properties around this time. After her death he settled at Brasted, in north-west Kent. In 1615 Sir John Brooke* offered to sell him for £1,100 the deputy wardenship of the Cinque Ports, which carried with it the lieutenancy of Dover Castle. Struggling to raise the money, Hammon resorted to extortion, fraudulently suing some of his late mother-in-law’s tenants for payment on old bonds which they had entered into with him. His sister-in-law condemned his conduct as ‘most unfitting for a man of the complainant’s place and rank’. Nevertheless, he had already paid Brooke £400 and given security for the balance when the 11th Lord Zouche became lord warden and the transaction was cancelled. Despite Hammon’s disreputable behaviour, Zouche subsequently appointed him lieutenant of Dover Castle, and he apparently retained the post until Sir Henry Mainwaring* took over in February 1620.
Hammon was returned to the 1621 Parliament for Corfe Castle on the interest of his stepdaughter’s husband, Edward Dackombe*.
Hammon was brought before the Privy Council in February 1622 for refusing to contribute to the Benevolence for the defence of the Palatinate. Chastened by this experience he paid £30 a month later.
