One might think that a pub named the Roscoe Arms in Liverpool was named fairly straightforwardly after a particular member of the Roscoe family - but it is not as easy as that. There is also a pub called the Sir Henry Roscoe in Liverpool and yet Sir Henry (1833-1915) was a Manchester man - a professor of chemistry at Manchester university and MP for South Manchester.
The Liverpool Roscoes included Thomas (1791-1871) an eminent translator and scholar and his father, William (1753-1831) a poet, historian and author who was also born in Liverpool. Judging by the sign I think this pub is named for the latter.
Household Saints by Francine Prose
2 hours ago