On July 2, 1670 a new book of Milton’s was licensed for publication and then registered with the Stationers in September. It contained two remarkable poems, Paradise Regained and Samson Agonistes. Thomas Ellwood, a young Quaker friend of Milton, had already seen a draft of Paradise Regained in 1666; indeed he claimed that he was himself the inspiration for the poem. Milton had given him to read the manuscript of Paradise Lost at Chalfont St Giles in 1665. When he returned it, he commented that “Thou hast said much here of Paradise lost, but what hast thou to say of Paradise found? He made me no Answer, but sate some time in a Muse; then brake off that discourse, and fell upon another …
Forsyth, Neil. "Paradise Regained". The Literary Encyclopedia. First published 04 February 2012; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=2921, accessed 18 April 2015.]