Thomas Wyatt (1504?-42) may have written the first sonnet in English. His translation from Plutarch's Moralia was the first publication of a classical moral essay in English. He introduced continental forms such as ottava rima to the language, and his paraphrase of the Penitential Psalms sparked a century of popular psalm translations. Yet while decades of criticism have centered on a handful of his best-known poems, many others are poorly understood,...