England & Wales birth registration: Plympton St Mary [district], Volume 9, Page 434, June quarter 1842
"England and Wales Census, 1851," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SGJ4-G63 : 10 November 2017), Edwin Lethbridge in household of James Lethbridge, Tavistock, Devon, England; citing Tavistock, Devon, England, p. 31, from "1851 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO HO 107, The National Archives of the UK, Kew, Surrey.
It may be possible to confirm family relationships with Edwin by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Edwin: