Robert Sidney was an English poet and courtier born in 1563. He was the younger brother of the famous poet Sir Philip Sidney and was known for his literary contributions during the late 16th century. Robert served in various political roles and was involved in the court of Queen Elizabeth I. Sidney's poetry often reflected themes of love and nature, similar to his brother's work. He published a collection titled "Astrophel and Stella," which showcased his talent and helped establish his reputation as a poet. Robert Sidney's legacy continues to be recognized in the context of the Elizabethan era and its literary achievements.