Katherine Grey His first wife,
Lady Katherine Grey, was a potential claimant to Elizabeth's throne, and law established that it was a penal offence for her to marry without notifying the Sovereign. They were married by an anonymous clergyman at Hertford House in
Cannon Row, Westminster, before 25 December 1560. The marriage was kept secret until August nearly a year later, when Katherine became visibly pregnant and she confided the reason to
Lord Robert Dudley. Each was ordered to confinement in the
Tower; Katherine was confined immediately, and Seymour imprisoned upon his return from a tour of the continent with Sir Thomas Cecil. While in custody, they were questioned about every aspect of their marriage, but they both claimed to have forgotten the date. A commission was begun, headed by
Archbishop Parker in February 1562. Under this pressure, Lady Katherine finally declared that they had waited for Elizabeth to quit the capital for
Eltham Palace. Servants were questioned, and none of them could remember the exact date either. John Fortescue said it was 'in November'. The priest could not be located, but by consulting the accounts of the Cofferer of the Household the marriage date was decided to be 27 November. His son Edward was declared illegitimate and the father was fined £15,000 in
Star Chamber for "seducing a virgin of the blood royal." Despite all this, the Earl apparently found a way to continue marital relations with his wife in the Tower. In February 1563, Thomas Seymour was born. Lady Katherine died in 1568, and Seymour was finally allowed out of the Tower and allowed to re-appear at court. Officially his sons remained bastards. In 1576 he carried the
sword of state at Elizabeth's procession of the knights of the garter.
Children by Katherine Grey •
Edward Seymour, Lord Beauchamp (1561–1612), eldest son and heir, born in the
Tower of London. He predeceased his father, having married Honora Rogers and had sons including his eldest surviving son
William Seymour, 2nd Duke of Somerset (1587–1660), restored in 1660 on the
Restoration of the Monarchy to the Dukedom forfeited on the attainder of the 1st Duke in 1552. The 2nd Duke, like his grandfather, was imprisoned for marrying in secret to a wife with royal blood, namely
Arbella Stuart. His
monumental brass inscription survives in
Great Bedwyn Church, inscribed in Latin: • Thomas Seymour (c.1563–1600), 2nd son, born in the Tower of London, who also predeceased his father and died childless, having married Isabell Onley (d.1619), daughter 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: 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 Montfort was suspended for three years by Archbishop
John Whitgift. ==Residences and landholdings==