Frederick Thellusson, who succeeded to an Irish barony in 1839, represented Suffolk East in the Conservative interest for nine years, but was arguably best known as the grandson of the merchant Peter Thellusson (1737-1797), author of one of the most notorious wills in British legal history. The Thellussons were originally Huguenots who had fled from Paris to Geneva after the revocation of the Edict of Nantes. In 1761 Peter Thellusson had been sent to England to complete his education and was naturalised by an Act of Parliament in the same year. He had subsequently established himself as a merchant banker in London, and following a series of speculations on the stock exchange and investments in plantations in Grenada and Montserrat, had amassed a considerable fortune.
Peter Thellusson’s eldest son, Peter Isaac Thellusson, had been returned for Midhurst in 1795 as a supporter of Pitt, and went on to represent Malmesbury, Castle Rising, and finally Bossiney.
In April 1843 Rendlesham, following a requisition from a ‘very numerous and influential portion of Conservative electors’, stood for a vacancy at Suffolk East created by the death of the sitting Member.
True to his word, Rendlesham, who was a steady attender in his first Parliament, voted against the Conservative ministry’s Canada corn bill, 22 May 1843. His subsequent votes suggest that his desire to be ‘unfettered by party feelings’ was more than just rhetoric: he opposed Peel by dividing against the twelve hour day in factories, 22 Mar. 1844, for William Miles’s amendment to the sugar duties bill, 17 June 1844, and against the Maynooth grant, 3 Apr. 1845. Blighted by a ‘hesitation of speech’, he rarely contributed to debate.
At the 1847 general election Rendlesham poured scorn on Peel and declared that he was prepared to support a ministry led by Lord John Russell, preferring ‘an open foe to an insidious friend’.
A less frequent attender in his second Parliament, Rendlesham’s votes reflected his continuing commitment to the agricultural interest.
Significantly, it was in Rendlesham’s role as a county magistrate, rather than as a Member of Parliament, that he was most effective in reforming the funding of lunatic asylums. A prominent member of the visiting committee for the Suffolk lunatic asylum, he vociferously campaigned against the ‘great injustice’ done to the agricultural community by the high proportion of the county rates given to the asylum.
By the beginning of 1852 Rendlesham’s health, which had been declining for some time, was ‘broken and past hope of recovery’ and in March that year he announced his intention to retire at the next general election.
Rendlesham was the second-to-last grandson of Peter Thellusson to die.
