An independently minded radical, de Beauvoir contested the borough of Windsor at every general election from 1832 to 1841, seeking to ‘emancipate’ it from the influence of the Court and of government nominees. His sole success, at the 1835 election, proved short-lived, as he was unseated on petition three months later.
De Beauvoir was the eldest son of John Browne, who had been awarded an Irish baronetcy in 1797, contested Mayo in 1806 and had a reputation for eccentricity.
In December 1832 de Beauvoir came forward at a very late stage as a candidate for Windsor, an unusual constituency because of royal influence. Described by Norman Gash as ‘a politician of radical principles’ who ‘smacked of the outlandish and the parvenu’, he secured support from the borough’s reformers, but finished in third place, 25 votes behind the Court candidate, Brooke Pechell.
In February 1833 de Beauvoir addressed a public meeting of ratepayers in Marylebone, with an attendance of several thousands, on the house and window taxes. Stating that ‘he belonged to no party’ and ‘detested all leaders of parties’, he explained that he would ‘not consent to anything derogatory to the aristocracy’, but thought they should ‘bear more of the public burdens’.
De Beauvoir came forward again for Windsor in November 1834, taking Clewer House for the period of the campaign.
De Beauvoir is not known to have spoken in debate during what turned out to be a fleeting parliamentary career. He faced pressure not to vote for Abercromby as speaker, with a threat that ‘the whole weight of the Carlton Club would be used to unseat him’ if he did so.
At the 1837 general election de Beauvoir arrived late on the scene at Windsor, and initially thought it useless to stand, but was reluctantly persuaded by his supporters to come forward, ‘a sign more of tenacity than judgement’.
De Beauvoir offered at Windsor yet again at the 1841 election, when he was described as ‘an ultra-Liberal’ who was ‘most popular with his party’
De Beauvoir came forward for the vacancy created by the death of one of Windsor’s sitting members in October 1845, when his address was described as ‘a curiosity’ which had ‘a fine smacking of his native Hibernian style’.
Alongside his political activities de Beauvoir took a keen interest in animal welfare. He was a supporter of the Zoological Society of London from its foundation,
De Beauvoir built up extensive railway interests during the railway boom of the 1840s, and by 1846 had already subscribed £32,000 to various railway companies.
In 1867 de Beauvoir married Letitia Mann, the granddaughter of Admiral Macdougall and step-granddaughter of his first wife.
