Sir Thomas Wyatt was a 16th-century English poet and diplomat, best known for introducing the sonnet form to English literature. His works often reflect themes of love, betrayal, and the complexities of courtly life, showcasing a blend of Italian poetic influences and traditional English styles. Wyatt's adaptation of the Petrarchan sonnet laid the groundwork for later English poets, particularly those in the Tudor and Elizabethan periods.