- [S30] A Genealogical and Heraldic Dictionary of the Landed Gentry of Great Britain and Ireland, Sir Bernard Burke, (London: Hurst and Blackett, 1855, scanned original pages on www.ancestry.co.uk, 2002;).
- [S135] Dorset, Marriages and Banns, 1813-1921, (scanned parish registers on www.ancestry.co.uk;).
1852. Marriage solemnized in the parish church of the parish of Iwerne Minster in the County of Dorset. No. 57, July 20th. William Leonard Halliday, 30, Bachelor, Officer in the Indian Army, Old Cleeve, father: John Halliday, Magistrate; and Emma Letitia Wyndham, 20, Spinster, Iwerne Minster, father: Alexander Wadham Wyndham, Esquire. Married in the parish church according to the Rites and Ceremonies of the Established Church after Banns by me, John Wyndham Rector of Sutton Mandeville Wilts. This Marriage was solemnized between us, WL Halliday, Emma Laetitia Wyndham, in the Presence of us, W. Blumenhapett[?], Emma Wyndham.
- [S205] FreeBMD, (www.freebmd.org.uk;), marriages of William Leonard Halliday and Emma Loetitia Wyndham share reference Shaftesbury 5a 369 in September quarter, 1852 (Reliability: 3).