I believe this is your Samuel.
(https://familysearch.org/ark:/61903/1:1:MXMN-75L : accessed 17 January 2020), Harry S Henn in household of Samuel Henn, Philadelphia Ward 24, Philadelphia, Pennsylvania, United States; citing ED 738, sheet 8B, line 67, family 160, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1628; FHL microfilm 1,821,628.
(https://familysearch.org/ark:/61903/1:1:XH7R-DXG : accessed 17 January 2020), Samuel Hunn in household of Albert Katz, Philadelphia (Districts 0251-0500), Philadelphia, Pennsylvania, United States; citing enumeration district (ED) ED 373, sheet 1B, line 68, family 19, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 2107; FHL microfilm 2,341,841.