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 pounds 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: Bellocamp(o) eram, Graia genetrice, Semerus. Tres habui natos, est quibus una soror ("I was Beauchamp, a Seymour, by my mother Grey. I have had three born of which one a sister") 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