Dear Anonymous, Chris has good suggestions on Michael's info, you are asking about. You may want to run with them. It would be a major help.
Michael J Mcmahon
United States Census, 1940
birth:
1871
Kansas
residence:
1940
Tract K-1, Seattle, Seattle Election Precinct, King, Washington, United States
Michael Mcmahon
United States Census, 1940
birth:
1889
Ireland
residence:
1940
Assembly District 26, San Francisco, San Francisco City, San Francisco, California, United States
Michael Mcmahon
United States Census, 1940
birth:
1905
Erie
residence:
1940
Assembly District 23, Manhattan, New York City, New York, New York, United States
Michael Mcmahon
United States Census, 1940
birth:
1869
Pennsylvania
residence:
1940
Ward 1, Johnsonburg, Johnsonburg Borough, Elk, Pennsylvania, United States
Michael Mcmahon
United States Census, 1940
birth:
1883
Ireland
residence:
1940
Ward 15, Hartford, Hartford Town, Hartford, Connecticut, United States
Michael Mcmahon
United States Census, 1940
birth:
1888
Irish Free State
residence:
1940
Ward 13, Boston, Boston City, Suffolk, Massachusetts, United States
Michael R Mcmahon
United States Census, 1940
birth:
1875
Eire
residence:
1940
Ward 10, Lowell, Lowell City, Middlesex, Massachusetts, United States
Michael Mcmahon
United States Census, 1940
birth:
1908
Scotland
residence:
1940
Ward 4, Kearny, Kearny Town, Hudson, New Jersey, United States
Michael Mcmahon
United States Census, 1930
birth:
1886
Ireland
residence:
1930
Hartford, Hartford, Connecticut, United States
immigration:
1910
Michael J Mcmahon
United States Census, 1930
birth:
1884
New York
residence:
1930
Binghamton, Broome, New York, United States
Michael Mcmahon
United States Census, 1930
birth:
1905
New Jersey
residence:
1930
Bayonne, Hudson, New Jersey, United States
Michael Mcmahon
United States Census, 1930
birth:
1885
Ireland
residence:
1930
Manhattan (Districts 0251-0500), New York, New York, United States
immigration:
1900
Michael Mc Mahon
United States Census, 1930
birth:
1881
Ireland Free State
residence:
1930
Brooklyn (Districts 0501-0750), Kings, New York, United States
immigration:
1900
Michael Mcmahon
United States Census, 1930
birth:
1856
Pennsylvania
residence:
1930
Bridgewater, Susquehanna, Pennsylvania, United States
Michael Mcmahon
United States Census, 1930
birth:
1891
Irish Free State
residence:
1930
San Francisco (Districts 1-250), San Francisco, California, United States
immigration:
1919
Michael Mcmahon
United States Census, 1920
birth:
1885
Ireland
residence:
1920
Hartford Ward 8, Hartford, Connecticut, United States
immigration:
1907
Michael Mcmahon
United States Census, 1920
birth:
1894
Maryland
residence:
1920
Baltimore Ward 24, Baltimore (Independent City), Maryland, United States
Michael F Mcmahon
United States Census, 1920
birth:
1871
Pennsylvania
residence:
1920
Johnsonburg, Elk, Pennsylvania, United States
Michael Mcmahon
United States Census, 1920
birth:
1877
Ireland
residence:
1920
Lowell Ward 5, Middlesex, Massachusetts, United States
immigration:
1895
Michael Mcmahon
United States Census, 1920
birth:
1856
Pennsylvania
residence:
1920
Bridgewater, Susquehanna, Pennsylvania, United States