- [S31] A Genealogical and Heraldic Dictionary of the Peerage and Baronetage of the British Empire, Sir Bernard Burke, (London: Harrison, 1865, scanned original pages on www.ancestry.co.uk, 2004;), pp.1111-1112 (Reliability: 2).
- [S104] 1871 Census Returns of England and Wales, General Register Office, (2 April 1871;), RG 10/5593 ff.71-72 pp.22-23 (Reliability: 3).
Thornton Roger Trevellyn, Head, Mar, 28, Landowner, Northumberland Chatton
Dobree W. Trevellyn, Wife, Mar, 34, Landowners Wife, Bath
John Spencer Trevellyn, Son, 6, Landowners Son, Middlesex London
Walter Raligh Trevellyn, Son, 5, Landowners Son, Hereford Hargest
Roger De Thornton Trevellyn, Son, 3, Landowners Son, Hereford Clifford
Lillian M.E.T. Trevellyn, Daur, 1, Landowners Daur, Hereford Clifford
George Alfred Trevellyn, Son, 1m (under one month [struck through]), Landowners Son, Hereford Clifford
Dorothy Trevellyn, Mother, Widow, 45, Landowners Mother, Northumberland Chatton
Jane Davis, Serv, Widow, 57, Nurse domestic, Brecon Brecon
Elizabeth Williams, Serv, Unm, 24, Cook domestic, Brecon Hay
Elizabeth Thomas, Serv, Unm, 23, Housemaid domestic, Hereford Kington
Thomas Hathaway, Serv, Unm [partially struck through], 30, Coachman domestic, Wilts Westport
Emily Edmunds, Serv, Unm, 18, Nurse domestic, Hereford Hereford
Sarah Edwards, Serv, Unm, 13, Nurse domestic, Hereford Clifford