Was your Izio born in 1922? His testimony is under the name Izrael Flusfeder? If so, he also used the name Joseph. He naturalized in NY in 1957, and the index has him as both Izrael & Joseph. He lived in the boro of Queens in 1957 at 194-02 67th Ave. Fresh Meadows (Fresh Meadows is a neighborhood in Queens.)
Israel Flusfeder married Gertrude Tesser in England in 1949.
This is his info from the nat index at Ancestry:
Gertrude Flusfeder traveled from England to NY in 1954 and in 1958.
It looks like he had a second wife named Lila Sturm. This page mentions him as Joseph "Izio"
He passed on in 2008. Lila passed on in 2019. '
Attached is Lila's obit which gives names of her children.
Best regards from your fellow Ariogala descendant,