For the 1910 Census with the Powells & Michael Dempsey, Arthur and his parents are listed as born in New York. Catherine and her parents were born in England and she immigrated in 1900. Catherine & Arthur had been married for 3 years. Florence, Marion, & Essie were all born in NY. Michael and his parents were born England and he immigrated in 1907. Margaret Powell was born NY, father born NY, and mother born England.
If the McHugh family found above is the right one, there are likely draft registration cards available for the sons.
WWI Draft Registration card - John Patrick McHugh, born 10 Jan. 1890 in Cleveland, Ohio; living at 44 Harvard, Depew, Erie Co., NY
WWII Draft Registration Card - John Patrick McHugh, born 10 Jan. 1890 in Cleveland, Ohio; living at 13921 Northfield Ave., East Cleveland
WWI Draft Registration card - Charles J. McHugh, born 18 Jul. 1892 in Cleveland, Ohio; living in Lancaster, Erie Co., New York; married. The Social Security Death Index has this Charles with a death date of Sep. 1974 and last residing in Lancaster, NY. The 1930 Census has Charles in Lancaster with wife Elizabeth and son Eugene, age 11. In the 1930 Census & the draft card, he is a postal worker.
WWI Draft Registration card - Leonard Joseph McHugh, born 29 Jul. 1899, native born, living at 44 Harvard, Depew, Erie Co., NY. His nearest relative was Thomas McHugh, living at 44 Harvard, Depew, Erie Co., NY. The Social Security Death Index has this Leonard with a death date of Mar. 1971 and last residence of Depew, NY.
