I have found Henry and Lucinda in 1880. I put in Henry, Ireland, no age, residence New York, wife Lucinda. They were found under Watison and have children Lizzie who would be Elizabeth, Mary who would be Mamie and a son transcribed as Lundy age 4. Also a brother Andrew Gallagher age 49. Since Henry is Watterson and Lucinda is Ellis, how can there be a brother Gallagher? Maybe brother-in-law.
Henry does have a sister Mary Ann that I have no further information on other than her birth abt 1837.
Peggy