After some years of courtship with Theresa Longworth, Yelverton was posted to
Edinburgh in early 1857. Theresa was staying there, with a friend who was another Catholic convert and a Sister of Charity, Arabella, daughter of
Charles Macfarlane. Yelverton called on her, and their relationship, considered to be between engaged persons, became intimate. Theresa Longworth participated in two ceremonies of marriage with Yelverton. • In the first, on 12 April 1857 the couple went through a ceremony of marriage at 1 Vincent Street, Edinburgh, Theresa's lodgings, according to the
Book of Common Prayer of the Church of England, read out by Yelverton. • In the second, she wed him secretly on 15 August 1857 in a Roman Catholic chapel near
Rostrevor,
County Down, Ireland. Yelverton later argued that Theresa did not believe that either of the ceremonies was a valid marriage. He was married on 26 June 1858, to Emily Marianne née Ashworth, daughter of
Charles Ashworth and widow of
Edward Forbes. Officiating was
Edward Ramsay of the
Scottish Episcopal Church. Theresa heard of this marriage three days later, and on 30 June a Catholic cleric showed Ramsay a copy of the certificate of the August 1857 Irish ceremony. The immediate consequence was that Theresa applied to the Edinburgh
procurator fiscal, and Yelverton was put in
Calton Jail on a
bigamy charge. The charge was later dropped. Yelverton asked for a further court declaration that he was not married to Theresa, and further legal proceedings ensued. Yelverton allegedly used his influence with the House of Lords. ==Reputational damage==