A minor gentry family, the Manatons were by the early sixteenth century resident on the estate in South Hill from which they took their name. Their first noteworthy member, another Ambrose, captained a ship against the Armada.
Manaton doubtless relied on family ties to secure his election to the 1621 Parliament as a Member for Bossiney, since his brother-in-law, Sir Richard Edgcumbe*, was a near kinsman of Sir Nicholas Prideaux, who enjoyed influence over the borough. Manaton’s legal background accounts for his nomination to the committee for a bill concerned with the procedure for transferring cases between courts (16 May).
For reasons which are unclear, Manaton was removed as a j.p. in 1621, but was almost immediately reinstated. In 1622 he began the piecemeal acquisition of a new seat at Trecarrel, a few miles from South Petherwin, which he stood to lose when his wife died. Trecarrel lay close to the home of Nicholas Trefusis*, who was not only his wife’s nephew and prospective heir, but also nephew to William Coryton*, vice-warden of the Stannaries.
In 1625 Manaton helped to impress 300 men for service in Ireland. Two years later, however, his disenchantment with the government was unmistakeable. Although appointed a commissioner for the Forced Loan, he was condemned by the duke of Buckingham on 27 June 1627 as a ‘mere creature’ of Coryton who was obstructing the collection process, in partnership with Nicholas Trefusis and Sir Richard Buller*. Buckingham demanded the removal of all three men from the Cornish bench. Fortunately for him, Edward Nicholas*, who transmitted the duke’s wishes to the lord keeper (Sir Thomas Coventry*), omitted Manaton’s name from his instructions, accidentally substituting that of Humphrey Nicoll*, who was not actually a j.p.
In May 1631 Manaton reluctantly compounded for knighthood, paying £25, having at first claimed that he ‘was not summoned nor had an estate’.
Manaton drew up his will in October that year. The preamble praises God ‘for giving me this and many other times sense of my many and grievous sins against Him and His blessed commandments and this time of begging pardon for the same’. Manaton requested private burial in just a linen sheet, and for his funeral sermon specified the text ‘blessed are they that die in the Lord for they rest from their labours’. His bequests included £5 each to the parishes of South Hill, South Petherwin and Launceston to provide interest-free loans to needy tradesmen and farmers. His Civil War experiences had not cooled his friendship with ‘that truly noble and good gent.’ Piers Edgcumbe, and the promise of dowries of £1,000 and £900 to his infant daughters suggests some optimism about his financial affairs. Both Manaton’s sons, also under-age when he died on 11 June 1651, sat in Parliament under the later Stuarts.
