'Brilliana, Lady Harley' was born in 1598 at Brill, Leiden, in the Netherlands while her father Sir
Sir Edward Conway (later Viscount Conway) was governor there. She married (as his third wife), Sir
Robert Harley (1579-1656) in 1623, and he served as her father's aide in the
Parliament of England, while her father was
Secretary of State of England.
Some 375 of her letters to her husband and her son
Edward Harley survive and show her to be an educated literary woman, at home in several languages. She was able to keep her husband informed of local political affairs when he was absent from home, attending Parliament or for other reasons, and organised the collection on information locally for the Parliamenrary Committee on Scandalous Ministers.
During the
English Civil War, in the absence of her husband and sons, she defended her home,
Brampton Bryan Castle during a seven week siege by
Royalist troops until the troops withdrew because they were needed at
Gloucester. She then compelled her tenants to level the Royalist siege earthworks. She also dispatched 40 troops to raid a local Royalist camp at
Knighton. She died of pneumonia on
29 October 1643.