I do see a passenger list for 1875... the age is correct, and so is the occupation...
Problem is... the Ancestry site's passenger list is faint...
So.. wanted another look ... at another site... and that is indeed an "R" and possibly your Gt GDFather.. all you have to do is ZOOM in !
No need to go to a Library ... you can view this for free... found you the link...
Passenger # 158.. 8th from the top..
https://familysearch.org/pal:/MM9.3.1/TH-1-16952-66723-11?cc...If this is your guy, I can easily place the source and link from the Ancestry site
Look forward to your reply !
.•:*¨¨*:•..•:*¨¨*:•.LostQuays.•:*¨¨*:•..•:*¨¨*:•.