Some information I have uncovered about
Mary Blunney and Michael McMahon's family:
Mary Blunney McMahon
died 26 Jan 1938
from NYC death certificate
Joseph McMahon and Ella Small
married 24 Nov 1917
from NYPD personnel records
Joseph McMahon
naturalized 7 Aug 1916
State of New York, City of New York
from original certificate
application NOT held by NARA, need to get to NYC to look up
John McMahon
died 22 Jan 1926
from NYC death certificate
Joseph McMahon
died 9 Feb 1926
from NYC death certificate
