[3] From 1642 to 1643 Throckmorton was Sheriff of Gloucestershire and at the start of the Civil War was appointed a Commissioner of Array for King Charles I.
He did not pay the fine imposed on him by the Parliamentary Committee for Compounding with Delinquents, with the result that his estate was sold to Thomas Gookin.
He won a seat as one of the two MP's for Gloucestershire in the Cavalier Parliament, although his election was not confirmed until 19 April 1662, due to his having been listed as a friend by Philip Wharton, 4th Baron Wharton, who was now highly distrusted by the ruling party having been a Parliamentarian during the Civil War, a Puritan and a favourite of Oliver Cromwell.
She died in childbirth[5] aged 25 on 18 August 1635, which circumstance is possibly alluded to in the holding by her effigy of an infant dressed in swaddling clothes.
On the death in 1635 of his wife Margaret Hopton aged 25, Throckmorton erected a very costly monument in a variety of coloured marbles to her memory in The Gaunt's Chapel, Bristol.
[10] The monument contains the following inscription, much mutilated and worn, on two small rectangular black marble panels beneath the ceiling of the canopy:
"Dedicated to the never dying memory of the Lady Margaret Throckmorton, the late wife of Sir Baynham Throckmorton, of Clowerwall, in the County of Glouc., Baronet, and youngest daughter of Mr. Robert Hopton, of that ancient and worthie family of the Hoptons of Witham, in the County of Somerset, Esquire, who lifted up her soule to God upon the 18th day of August in the year of our Lord 1635 and of her age above 25".The following lines of verse are contained within an oval tablet of black marble above the effigies: "A precious Femme, a Margarite, was lent To crowne Throckmorton with a rich content Contented he his Margarite did set In's faithfull breast his choisest cabanet She wished no better till her lustre drew The King of Heaven to like her gracious hue Who deeming it unfit a subject should Longer enjoy a femme of that rich mould Tooke back his loane and fixing her above Left to Throckmorton this sole pledge of love Mors rapax, urna capax, sed spes tenax."
(Translated: "grasping Death, a roomy urn, but hope tenacious") On the floor in front of the monument is a stone slab incised with the first part of the above inscription.