Henry Mainwaring in the King's cause in the English Civil War, was exiled to France, and died in poverty. He was buried at St. Giles' Church, Camberwell, London, on 15 May 1653. Mainwaring married a daughter of Sir Thomas Gardiner in 1630. She died in 1633. His brothers were Sir Arthur Mainwaring, Carver to Prince Henry, George Mainwaring, the defender of Tong Castle, and Sir Thomas Mainwaring, the Recorder of Reading. The Mainwaring family was old and distinguished, probably having arrived in England in the train of William the Conqueror (1066). Henry Mainwaring Sir Henry Mainwaring (1587–1653), was an English lawyer, soldier,
Mainwaring baronets of the United Kingdom on 26 May 1804 for Henry Mainwaring, son of Thomas Weterall Mainwaring. It was extinct on the death of the 5th Baronet in 1934. Mainwaring baronets The Baronetcy of Mainwaring of Over-Peover has twice been created for members of the family of Mainwaring of Over-Peover, Cheshire. It was created on 22 November 1660 by Charles II on his restoration, for Thomas Mainwaring, High Sheriff of Cheshire in 1657 and Knight of the Shire otherwise Member of Parliament for Cheshire in 1660. The baronetcy was extinct on the death of the 4th Baronet. However his widow remarried