John William Cousin, A Short Biographical Dictionary of English Literature… (1910)
“ S. shares with Sir Thomas Wyatt (q.v.) the honour of being the true successor of Chaucer in English poetry, and he has the distinction of being, in his translation of the Æneid, the first to introduce blank verse, and, with Wyatt, the sonnet. The poems of S., though well known in courtly circles, were not pub. during his life ”
