Maternal 3rd great-grandfather
- Son of Michael Harrigan and Hannah (Honora) O’Brien
- B. 20 May 1853 Lowell, MA
- Married Harriet Gray 20 Aug 1876 Wakefield, MA
- D. 29 Dec 1907 Danvers, MA
His children with Harriet Gray:
- Mary Elizabeth Harrigan 1877-1901
- Arthur Israel Harrigan 1880-1969
- Lena Harrigan 1886-1980
- Ethel Gray Harrigan 1896-1961
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