Robert Devereux. Robert Devereux, 2nd Earl of Essex, KG, PC, was an English nobleman and a favourite of Elizabeth I. Politically ambitious, and a committed general, he was placed under house arrest following a poor campaign in Ireland during the Nine Years' War in 1599.
   In 1601, he led an abortive coup d'état against the government and was executed for treason. Essex was born on 10 November 1565 at Netherwood near Bromyard, in Herefordshire, the son of Walter Devereux, 1st Earl of Essex, and Lettice Knollys.
   His maternal great-grandmother Mary Boleyn was a sister of Anne Boleyn, the mother of Queen Elizabeth I, making him a first-cousin-twice-removed of the Queen. He was brought up on his father's estates at Chartley Castle, Staffordshire, and at Lamphey, Pembrokeshire, in Wales.
   His father died in 1576, and the new Earl of Essex became a ward of Lord Burghley. In 1577, he was admitted as a fellow-commoner at Trinity College, Cambridge; in 1579, he matriculated; and in 1581 he graduated as a Master of Arts.
   On 21 September 1578, Essex's mother married Robert Dudley, Earl of Leicester, Elizabeth I's long-standing favourite and Robert Devereux's godfather. Essex performed military service under his stepfather in the Netherlands, before making an impact at court and winning the Queen's favour. In 1590, he married Frances Walsingham, daughter of Sir Francis Walsingham and widow of Sir Philip Sidney
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