Sadly, none of those names match up with any of the Nellie's that are descended from Richard William Roberts... I have also looked into the site about the Pubs, the information on there does not seem to have been researched properly; it states the Richard was born in 1838, the son on Flint Roberts (Frederick H Roberts), Frederick was the landlord from 1895-1909, looking at the censuses, it says that he was born in 1857 (totally impossible for him to be Richard's Father), he was married to a woman called Alice. they appear to have only had 4 children, Walter born in 1883, Gertrude in 1886, Frederick in 1886 (took over the pub after his fathers death) and Alice born in 1890. there is no evidence of him ever having a son called Richard that could even be mistaken for the Richard William Roberts who was the coxswain. However, it would appear Frederick H Roberts's father was Henry Roberts and his date of birth would match up with Henry Abraham Roberts born in 1834, the brother of Richard William Roberts, so this could be the connection your family has. Hope this helps.