Shakespeare's sonnets
The primary source of Shakespeare’s sonnets is a quarto published in 1609 titled "Shakespeare’s Sonnets." It contains 154 sonnets, which are followed by the long poem "A Lover's Complaint". Thirteen copies of the quarto have survived in fairly good shape from the 1609 edition, which is the only edition; there were no other printings. There is evidence in a note on the title page of one of the extant copies that the great Elizabethan actor Edward Alleyn bought a copy in June 1609 for one shilling.
English Romantic sonnets
The sonnet is a poem of fourteen lines that follows a strict rhyme scheme and specific structure, the invention of which is credited to the thirteenth century Italian poet Giacomo Da Lentini, and was subsequently made famous by Petrarch. Thomas Wyatt, in the early 16th century, introduced the sonnet into England. However, it was the Earl of Surrey who developed the rhyme scheme – "abab cdcd efef gg" – which now characterizes the English or Shakespearean sonnet.