On 24 January 1659-1660, Boys presented to the mayor of Canterbury a declaration in favour of the assembly of a free parliament, drawn up by himself in behalf (as he asserted) "of the nobility, gentry, ministry, and commonalty of the county of Kent".
In February 1659-60 he went to London with his kinsman, Sir John Boys of Bonnington, and presented to Monk, at Whitehall, a letter of thanks, drawn up by himself 'according to the order and advice of the gentlemen of East Kent.'
At their close Boys mentions that he has just heard of the death of Henry, Duke of Gloucester (13 September 1660), and proceeds to pen an elegy suggested by Virgil's lament for Marcellus.
The volume concludes with "certain pieces relating to the publick," i.e. on the political matters referred to above, and with a congratulatory poem (dated Canterbury, 30 September 1656) addressed to Boys' friend, William Somner, on the completion of his Dictionarium Saxonico-Latino-Anglicum.
A translation of the third book of the Æneid in heroic verse occupies fifty-one pages, and is followed by "some few hasty reflections upon the precedent poem."