Who married Ludovic Stewart, 2nd Duke of Lennox?

Ludovic Stewart, 2nd Duke of Lennox and 1st Duke of Richmond (29 September 1574 – 16 February 1624) was a Scottish nobleman and a second cousin of King James VI and I. He was involved in court theatre and the Plantation of Ulster in Ireland and the colonisation of Maine in New England. Richmond's Island and Cape Richmond as well as Richmond, Maine (formerly Fort Richmond), are named after him. His magnificent monument with effigies survives in Westminster Abbey.

Frances Stewart (née Howard), Duchess of Lennox and Richmond, Countess of Hertford (27 July 1578 – 8 October 1639) was the daughter of a younger son of the Duke of Norfolk. An orphan of small fortune, she rose to be the only duchess at the court of James I of England. She married the son of a London alderman who died in 1599, leaving her a wealthy widow at a young age. She became, for 20 years, the third wife of the ageing Edward Seymour, 1st Earl of Hertford, nephew of Jane Seymour, third queen consort of Henry VIII. Within months of Edward's death she married a cousin of James I, Ludovic Stewart, 2nd Duke of Lennox and 1st Duke of Richmond. One of the great beauties of the Jacobean court, she was also the patron of Captain John Smith of the Virginia Colony.