Hi Joe,
While we wait:
Shane - found these Burkes  in Shaw's Dublin City Directory 1850
John, 3 Little Mary St (hat mart)
John, 34 North King St (provision dealer)
John, 3 Synnott row (tenements - no detailed listing)
John, 26 Lower Temple St (bootmaker - spelt Bourke in street listing)
John, 17 Queen St (Esq.) (Only one qualifying as gentleman)
John, 30 Barrack St (dairy)
John, 10 Portland place (clerk)
John, 50 Henry St (cabinet maker)
John, 25 Upper Bridge St (Cashel hotel)
John, 26 Upper Bridge St (grocer)
John, 11 Whitefriar St (coach maker)
John, 79 Amiens St (grocer)
John, 39 Wicklow St (grocer)
John, 151 Church St (provision dealer)
http://www.dublin1850.com/dublin1850/index.html#BAlso:
Edward, 109 James' St (proprietor - Hog and Armour Inn - spelt Edmond in street listing)
Francis James Junior, 5 Grenville St (barrister - Hilary term 1839)
James, 51-52 Marlborough St (pawn broker)
F., 3 Talbot St (Esq.)
Rose
From the Law Directory (not listed at stated address)
A. O'Grady, 7 King's Inns quay (solicitor)
James, 32 Great Brunswick St (solicitor)
Sutherland
Mrs. A., 47 Great Brunswick St (occup not listed)
E., 17 South Richmond St (dentist)
Mrs., 15 Synge St (dressmaker)
However, 
http://www.libraryireland.com/DublinDirectory1850/s.php on line index  has this lot as well:
Sutherland, E. 17 Richmond street, South   Mrs. 15 Synge street
   Mrs. A. 47 Brunswick street, Great Sutter,
   Robert, 3 Sherrard street, Lower Sutton,
   Arthur, 3 Chatham street
   Francis, 2 Christ Church place, and Copper alley
   Frederick, 19 Kildare street
   James, Greenfield, Harold's cross, and 12 Mary's abbey
   James, 76 Great Brunswick street
   Miss, 191 do.
   Mrs. 63 Manor street
   George, 33 Mabbot street
   William, 5 Phibsborough avenue
Mostly Northsiders!
John Burke, 27 Richmond street, South  ( Not very plausable for Clontarf Church, but  a 
Sutherland in the same street).
Joe, these are bits of info which may just tie in as we go along. It shows several families fairly close to Clontarf in 1850
http://www.araltas.com/features/burke/ Has an interesting Burke in Ohio.