Came across this in 1859 New Bedford [Massachusetts] City Directory, available on google books. Passing it on just in case ... Not sure if this is a possibility for your James Downey & Clara McGillick.
A search of the address: "rear foot of Middle" turned up a Peter Gillick and James Downey at same address. Research on Peter Gillick puts his birth abt.1828; d.1886 New Bedford MA; p. James Gulick & Bridget [taken from 1868 2nd marriage record in Fall River MA to Mary C Carroll]; 1st marr Hannah Gray.