Eldest daughter of William Mostyn-Owen Sr of Woodhouse. Married Edward Hosier Williams (d. 1844) in 1831 and Thomas Chandler Haliburton (d. 1865; Modern English biography) in 1856. A close friend and neighbour of CD before the Beagle voyage.
Sources: BMD (Marriage index) Burke’s landed gentry 1952 s.v. Mostyn-OwenCensus returns of England and Wales 1881 (The National Archives: Public Record Office RG11/0843/38/13) Correspondence vol. 1 s.v. Owen, Sarah Harriet London Gazette, 25 May 1888, p. 2983 (See the bibliography for full references to sources)