- [S33] Burke's Peerage and Gentry Website, (http://www.burkes-landed-gentry.com;), 107th edition, De Montmorency lineage (Reliability: 2).
- [S205] FreeBMD, (www.freebmd.org.uk;), marriages of Evelyn Henry M P Pearson and Mabel A Throckmorton share reference St. Geo. H. Sq. 1a 811, June quarter 1895 (Reliability: 2).
- [S114] Debt of Honour Register, Commonwealth War Graves Commission, (www.cwgc.org;).
Name: PEARSON, EVELYN HENRY MALCOLM; Initials: E H M; Nationality: United Kingdom; Rank: Captain; Regiment/Service: The King's (Liverpool Regiment); Unit Text: 12th Bn.; Age: 41; Date of Death: 08/01/1916; Additional information: Son of the late Albert Harford Pearson and Rosetta Mary Bennett-Poe (formerly Pearson).; Casualty Type: Commonwealth War Dead; Grave/Memorial Reference: II. M. 2.; Cemetery: BETHUNE TOWN CEMETERY
- [S205] FreeBMD, (www.freebmd.org.uk;), marriages of Albert Harford Pearson and Rosetta Mary Sanders share reference Bromley 2a 493, September quarter 1871 (Reliability: 3).