| Name | Business Name | Occupation | Location 1 | Location 2 | City | State | Year |
| Daniel J. Mahady | piano finisher | 531 Tremont | at Cambridge | Boston | MA | 1890 | |
| John Mahady | real estate | 10 State | at Cambridge | Boston | MA | 1890 | |
| Thomas Mahady | sawyer | 847 Charles | Boston | MA | 1890 |
| Name | Business Name | Occupation | Location 1 | Location 2 | City | State | Year |
| Delia Mahady widow Michael. | 69 4th avenue | Brooklyn | NY | 1888, 1889 | |||
| John Mahady | salesman | 57 president | Brooklyn | NY | 1888, 1889 | ||
| Michael Mahady | peddler | 940 Atlantic avenue | Brooklyn | NY | 1888, 1889 | ||
| William C. Mahady | 974 Atlantic avenue | Brooklyn | NY | 1888, 1889 | |||
| Edward J. Mahady | police | 926 Bergen | Brooklyn | NY | 1889, 1890 | ||
| Ellen Mahady , widow William | 839 Bergen | Brooklyn | NY | 1889, 1890 | |||
| George W. Mahady | silverplater | 302 Elton | Brooklyn | NY | 1889, 1890 |
| Name | Business Name | Occupation | Location 1 | Location 2 | City | State | Year |
| Daniel J. Mahady | piano maker | 25 Andrew | Cambridge | MA | 1887 | ||
| John Mahady | insurance | 613 Main | 111 Magazine | Cambridge | MA | 1887 | |
| Wm. J. Mahady | broker | 613 Main | boards 111 Magazine | Cambridge | MA | 1887 | |
| Daniel J. Mahady | piano maker | house 25 Andrew | Cambridge | MA | 1888 | ||
| John Mahady | insurance and real estate | 613 Main | house 111 Magazine | Cambridge | MA | 1888 | |
| Wm. J. Mahady | real estate and insurance |
613 Main |
boards 111 Magazine |
Cambridge |
MA |
1888 |
|
|
Daniel J. Mahady |
|
piano maker |
B. |
house 25 Andrew |
Cambridge |
MA |
1889 |
|
Miss Eliza Mahady |
Little, Brown & Co. |
bookbinder |
Blackstone |
25 do |
Cambridge |
MA |
1889 |
|
John Mahady |
|
insurance and real estate |
613 Main and (10 State, B.) |
11i Magazine |
Cambridge |
MA |
1889 |
|
William J. Mahady |
|
real estate and insurance |
613 Main |
63 Pleasant |
Cambridge |
MA |
1889 |
| Name | Business Name | Occupation | Location 1 | Location 2 | City | State | Year |
| William J. Mahady | Pinkertons' Protection Patrol | captain | b Pacific House | MO | |||
| William J. Mahady | Pinkerton's Protective Patrol | capt | b St. James Hotel | MO |
| Name | Business Name | Occupation | Location 1 | Location 2 | City | State | Year |
| James Mahady | St Ry | laborer | r 2505 24th avenue s | Minneapolis | MN | 1890, 1891 |
| Name | Business Name | Occupation | Location 1 | Location 2 | City | State | Year |
| John J. Mahady | laborer | house 34 Cargill | Providence | RI | 1890, 1891 | ||
| Patrick Mahady | Providence | RI | 1890, 1891 | ||||
| Francis J. Mahady | laborer | boards 34 Cargill | Providence | RI | 1891, 1892 | ||
| John J. Mahady | laborer | house 34 Cargill | Providence | RI | 1891, 1892 |
Source: Ancestry.Com