My now-retired rabbi from my now-former shul in the USA (though my wife and I still maintain our status as "Honorary Members" through a special dues rate accorded to people who have relocated from the vicinity) was active with the chevra kadisha. We had numerous discussions regarding funeral and burial practices.
Seems that there are many people who, for whatever reason, acquired surnames such as Cohen or Katz when they were not in fact Kohanim, or surnames such as Levy or Levinson when they in fact were not Leviim. The Hebrew spelling of their surnames in such cases is (or at least should be) קוהן or קץ instead of כהן or כץ , or לבי or לבינסון instead of לוי or . לוינסון
Ken Ryesky, Petach Tikva, Israel kenneth.ryesky@...
RAISKY/REISKY, ARONOV, SHKOLNIK(OV), AEROV; Gomel, Belarus
GERTZIG, BRODSKY; Yelizavetgrad, Ukraine
BRODSKY, VASILESKY; Odessa, Ukraine
IZRAELSON, ARSHENOV; Yevpatoriya, Ukraine (Crimea)