The engagement was announced 9 January, 2006 between Piers James Richard Butler, 18th Viscount Mountgarret (b. 15 Apr, 1961), eldest son of the late 17th Viscount Mountgarret (1936-2004), by his 1st wife, Gillian Margaret Buckley (now Gillian, Baroness Howard De Walden), & Fenella M. Fawcus, daughter of Mr and Mrs David Fawcus, of Keevil, Wiltshire.
It will be Lord Mountgarret's second marriage. He has 2 daughters from his 1995 marriage to Laura Brown Gary, dau of Albert Dickens Williams, Jr. Hde was divorced in 2000.
Source: The Times 9 January, 2006