I was following the music connection back and forward in time, and found an interesting legal/music Kearney household in 1863 :
Pettigew & Oulton 1840
56 Mount Street, Anthony Richard Kearney, solicitor
39 Dominick Street Upr, Michael Kearney (no occupation listed)
There are less houses on Dominick Street Upr in 1840 - nearly 80 in 1848 and only 40 in 1840.
From Thom's 1848
70 Dominick Street upper, Mrs & John Kearney profs of Music
1850
70 Dominick Street upper, Mrs & John Kearney profs of Music
1852
J.H. Dunne, patent asphalte manuf., 70 Dominick Street upper
Peter Kearney, prof of music, 26 Clarence place Gt
1863
John F. Kearney, law agent, 59 Dominick Street upper
Mrs Kearney, English French & musical seminary, 59 Dominick Street upper
I'll follow the law agent and address forward a bit more and see where it leads...
I wonder if the details of father's occupation of John jnr's marriage cert might have been a little bit exaggerated
Shane