Peter,
  People often had both Hebrew and secular names.  They could have been Hebrew and Yiddish (caiques) or Hebrew and English, etc.  Also in more recent times people may have chosen a secular name that had the same initial sound as the Hebrew.  I can definitely state that my father Fred's Hebrew name was Efraim.  
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Sarah L Meyer
Georgetown TX
ANK(I)ER, BIGOS, KARMELEK, PERLSTADT, STOKFISZ, SZPIL(T)BAUM, Poland
BIRGARDOVSKY, EDELBERG, HITE (CHAIT), PERCHIK Russia (southern Ukraine) and some Latvia or Lithuania
https://www.sarahsgenies.com