this is a link to the baptisms of
James, Denis and Micheal MULDOON from Irish genealogy
there is also a Cunningham birth where Thomas and Mary were sponsors
Civil Reference for marriage of Thomas MULDOON and Mary CUNNINGHAM; order the certificate will give the names of their fathers and possibly addresses that may help
Death of Denis MuldoonFamily on 1901 censusFamily on 1911 censusThomas Snr is not listed in 1911 but Mary describes herself as married
She also states that she had 11 children with only 4 living
List of MULDOON deaths in South Dublin 1896 to 1911
This includes
John born and died in 1898
Denis born and died in 1899
Mary Josephine born and died in 1903
Peter born and died in 1908
Kathleen born and died in 1908
which would be good starts in finding the missing siblings
Also included is a death in Jul-Sep 1901 for a Thomas MULDOON aged 26 Dublin South Vol 1 Page 451
which looks a good match for Thomas Snr.