He became third Baron of the
Court of Exchequer (Ireland) in 1673 and went regularly as judge of
assize to
Connaught; this became the subject of a well-known satire,
Elegy on the Pig that followed Chief Baron Henn and Baron Worth from Connaught to Dublin. When
John Bysse died in 1680 the Lord Lieutenant suggested that
Sir Richard Reynell, 1st Baronet should be the new Chief Baron. However, the anti-Catholic hysteria engendered by
Popish Plot was at its height and Reynell was suspected of
Roman Catholic leanings.
Charles II preferred Henn, as he was a staunch
Protestant and a man with strong connections at Court. After King Charles's death, Henn's Protestantism made him unacceptable to the new Catholic King
James II, and he was removed from office in 1687, retiring to his parents' house Rooksnest, in
Tandridge,
Surrey. After the
Revolution of 1688, unlike some of Charles II's Irish judges, he showed no interest in returning to the Bench. He lived in retirement at Tandridge till his death in 1708. == Family ==