Sidney attended Oxford University and traveled on the Continent before attending the court of Elizabeth I. He died in battle against the Spanish in the Low Countries. His major works, all published posthumously, are a prose romance called Arcadia (1590), a sonnet sequence called Astrophel and Stella (1591), and An Apology for Poetry (also known as The Defense of Poesie, 1595).
Wollstonecraft quotes from his Arcadia in A Vindication of the Rights of Woman, section 5