of Edward Onley (1522–1582), Esquire, (Latinized to Unleius, genitive Unleii on his father's monument in Salisbury Cathedral) of Catesby in Northamptonshire, MP for Brackley in 1563. Thomas's mural monument, possibly by the sculptor Epiphanius Evesham, survives in St Margaret's Church, Westminster (his father's townhouse, Hertford House, was in Cannon Row, Westminster), showing kneeling effigies of himself and his wife, inscribed as follows: "Here in peace resteth ye bodyes of Thomas Seymour, second sone to ye right honourable Edward, Earle of Hartford, and Esable his wife, eldest daughter to Edward Onley of Katesby in ye county of Northampton Esq., wh(ich) said Thomas departed this mortall life ye eight day of August 1600 & ye said Esable ye twen(tie)th day of August 1619 in ye true faith of Jesus Christ & in ye blesse(d) hope of a joyfull resurection". Frances Howard Frances Howard, daughter of William Howard, 1st Baron Howard of Effingham, was a gentlewoman of the Privy Chamber. In May 1573 she and her sister Douglas, Lady Sheffield were said to be rivals for the affections of the Earl of Leicester. In 1582, she married Hertford. Their union was in secret, and remained so for nearly a decade, while Frances continued at court. Hertford attempted to have this marriage set aside in 1595 (hoping to clear his still illegitimate sons' claim to the throne). He was arrested again, and Frances died in 1598. She was buried in Westminster Abbey. Frances Prannell In May 1601, he secretly married once more, to the wealthy widow Frances Prannell, also born Frances Howard, the daughter of Thomas Howard, 1st Viscount Howard of Bindon. The marriage was performed by Thomas Montfort without banns or licence, for which Monfort was suspended for three years by Archbishop John Whitgift. Residences and landholdings His principal seats were as follows: Wulfhall in Great Bedwyn, Wiltshire, inherited from his father. Abandoned in favour of nearby Tottenham House. Tottenham House in Great Bedwyn, Wiltshire, which he built. Hatch Beauchamp in Somerset, the ancient seat of his ancestors Barons Beauchamp of Hatch. Netley Abbey, Hampshire, which he purchased in 1602 from William Paulet, 4th Marquess of Winchester (c.1560–1629) of Basing House, Hampshire. He died there in 1621. Hertford House, Cannon Row in Westminster, townhouse. Arms The arms of Edward Seymour, 1st Duke of Somerset (died 1552), quartered the original arms of the head of the family with a new grant of arms from