Francis Richard Wegg-Prosser (19 June 1824 – 16 August 1911), born Francis Richard Haggitt, was a wealthy Englishman who established the Benedictine community which became Belmont Abbey and so played a significant role in the English catholic revival.
Wegg-Prosser was born Francis Richard Haggitt, the only son of Rev. Prebendary Francis Haggit, rector of Nuneham Courtenay Oxfordshire. He was educated at Eton and Balliol College, Oxford from where he graduated with a Mathematics degree in 1845.
He served as Conservative Member of Parliament (MP) for Herefordshire from 1847 to 1852. In 1849 he inherited the very substantial estates (estimated at over £250,000 - equivalent to ca£10 million in 2005) of his great-uncle, Rev. Dr. Richard Prosser, Archdeacon of Durham. At the time of this inheritance he changed his name by royal licence to Wegg-Prosser.
In 1852 he converted to Roman Catholicism and was received into the Catholic Church by Bishop Grant of Southwark. This event entirely altered his career.
After providing facilities for Catholic worship in his neighbourhood, he built a beautiful church on his estate, which, by agreement with the Bishop of Newport and the superiors of the English Benedictine Congregation, became the pro-cathedral of the diocese. On the adjoining land given by him, a monastery was built, to serve as the novitiate and house of studies of the congregation. This became Belmont Abbey. Wegg-Prosser was also identified with several Catholic interests. For many years he was a zealous member of the Superior Council of the Society of St. Vincent de Paul, a member of the Catholic union, and a representative of the Diocese of Newport on the Catholic Education Council. In his secular life he was devoted to mathematical science, and particularly to astronomy. He wrote a book, "Galileo and his Judges" (London, 1889), on the question of Galileo, and translated, under the title "Rome and her captors" (London, 1875), the letters collected by Count Henri d'Ideville upon the Roman question of 1867-70. He married Lady Harriet Catherine, daughter of the second Earl Somers; she died in 1893, leaving two sons and two daughters. He died near Hereford, England, in 1911.