Thomas Francis O’Connor’s mother was Julia Henry. Julia Henry O’Connor was widowed when her husband Anthony O’Connor was run over by a train in Pittsburgh, PA in 1894.
Aunt Alice had a notation in her records that Julia Henry had first been married to a Dan Regan in Ireland, then married to Anthony O’Connor. Turns out that Julia Henry was married to Daniel Regan in 1899 in Scranton, Pennsylvania. This was a second marriage for Dan Regan and Julia Henry. Julia Henry was listed on the marriage record as Julia Henry O'Connor.
This 1899 marriage record is the first record I have found that names Julia Henry's parents. Julia Henry was the daughter of James & Anne Henry. Unfortunately no surname for Julia's mother was listed.
Daniel Regan and Julia Henry O’Connor Regan are found together in the 1900 US Census on 206 Grant Avenue in Scranton, PA about one block away from Julia’s son Thomas O’Connor and his family.
I do not know what happened to Dan Regan - I haven’t found a death record and I haven’t been able to locate him in the 1910 US Census, but Julia was located in the 1910 US Census. Julia was living with her son Thomas O’Connor and his family and she is enumerated as Julia O’Connor - widow. Julia is listed in the 1920 US Census and on her death record as Julia O’Connor - she apparently dropped the Regan surname.
Unfortunately I do not have a photograph of Julia Henry.