You'd do better with more info -- Eliz's date of birth, the 2 siblings' years of birth, where in Chicago(?) they were raised?What last name was he raised under?Who did Eliz marry the first time or was it Guices?
I see a close spelling option in 1930; prob not the correct age group, but the spelling is close:
16th & Union, Chicago
Name: John Gusis [John Lusis] Gender: Male Birth Year: abt 1881 Birthplace: Lithuania Race: White Home in 1930: Chicago (Districts 751-1000), Cook, Illinois View Map Marital Status: Widowed Immigration Year: 1911 Relation to Head of House: Boarder Father's Birthplace: Lithuania Mother's Birthplace: Lithuania Household Members: Name Age Anna Daniels 49 George Daniels 25 Frank Daniels 19 ***********John Gusis 49, widowed, trucker/freight, arrivd 1911