Robert Throckmorton may have trained at the Middle Temple, the inn attended by his father. At least three of his younger brothers and his own eldest son studied at Middle Temple, but as the heir to extensive estates, he had little need to seek a career at court or in government. He was joined with his father in several stewardships from 1527 and was perhaps the servant of Robert Tyrwhitt, a distant relative by marriage of the Throckmortons, who in 1540 took an inventory of Cromwell's goods at Mortlake. He attended the reception of Anne of Cleves and with several of his brothers took part in the French war of 1544. Three years later he was placed on the Warwickshire bench, and in 1553 appointed High Sheriff of Warwickshire. He was also elected as a knight of the shire for Warwickshire in 1553 and 1555. Three of his brothers likewise sat for Parliament, Nicholas as knight of the shire for Northamptonshire. Throckmorton's role in the succession crisis of 1553 is unknown, but his standing with Queen Mary is shown by her reputed answer to the news of Edward VI's death sent her by four of his brothers: "If Robert had been there she durst have gaged her life and hazarded the hap." In the autumn of 1553, Throckmorton was knighted and appointed constable of Warwick Castle. He continued to sit as MP for the shire until 1558, when he resigned in favour of his eldest son, Thomas.
Religion
His Catholicism explains his disappearance from the Commons in the new reign, although the most Catholic of his brothers, Anthony Throckmorton, was to sit in the Parliament of 1563. Judged an "adversary of true religion" in 1564, Throckmorton remained active in Warwickshire until his refusal to subscribe to the Act of Uniformity led to his removal from the commission of the peace. In 1577, the Bishop of Worcester, John Whitgift, listed Throckmorton as a Catholic and reckoned him to be worth 1,000 marks a year in lands and £1,000 in goods.
Family
Sir Robert Throckmorton's mother was the daughter of Elizabeth FitzHugh, mother of Sir Thomas Parr, by her first marriage to William Parr, 1st Baron Parr of Kendal. This connection made Throckmorton a first cousin to Queen ConsortCatherine Parr and her brother William Parr, 1st Marquess of Northampton. Throckmorton continued the family in the Catholic tradition. He married his children into leading Catholic families, and in these generations the increased persecution of the Catholics led to many of his relatives becoming involved in plots against the throne. The sons of his daughters Anne and Muriel, were Robert Catesby and Francis Tresham of Gunpowder Plot fame. and a third daughter, Mary, was married to Edward Arden, who was also convicted of treason and executed for his part in a plot to assassinate Queen Elizabeth in 1583. Mary Arden kept an excellent record of a woman persecuted for recusancy, documenting the fines and searches made at Coughton Court, that is still in the family archives. A nephew, Francis Throckmorton, was executed in 1584 for acting as a go-between for Mary, Queen of Scots and the Spanish Ambassador in an attempt to invade England and place Mary on the throne. A niece Elizabeth, also known as Bess, the daughter of Sir Nicholas, and a lady-in-waiting to Queen Elizabeth, also got into trouble by secretly marrying Sir Walter Raleigh.
Death and burial
Robert Throckmorton died on 12 February 1581, six days after making a will in which he styled himself as being of Weston Underwood, Buckinghamshire, but asked to be buried at Coughton, where an alabaster and marble tomb was accordingly erected to his memory. There is a portrait of him at Coughton Court. He named as executors his eldest son Thomas, and his sons-in-law, Sir John Goodwin and Ralph Sheldon, and as overseers another son-in-law Sir Thomas Tresham and his "loving friend" Edmund Plowden.
Thomas Throckmorton of Coughton, who married, about 1556, Mary Whorwood, by whom he had two sons, including John Throckmorton, esquire, father of Robert Throckmorton, 1st Baronet, and five daughters.
Elizabeth Throckmorton, who married Sir John Goodwin of Winchendon, Buckinghamshire.
Muriel Throckmorton, who married Sir Thomas Tresham of Rushton Hall, Northamptonshire, by whom she was the mother of the conspirator, Francis Tresham.
Anne Throckmorton, who married Sir William Catesby of Lapworth, Warwickshire, on 9 June 1566 at Ashby St. Ledgers, Northamptonshire, and had children, including Robert Catesby.
Elizabeth Throckmorton, who married Sir Anthony Tyringham of Tyringham, Buckinghamshire, by whom she had a daughter, Elizabeth Tyringham, who married Sir Robert Fisher, the first of the Fisher baronets.
Temperance Throckmorton, who married Sir Randal Brereton, by whom she had no issue.
