Harry Belafonte typo?

In the dozen references to JAMAICA FAREWELL in the US Top 40 Singles For 1957, Harry’s last name is specified as “Belanfonte” instead of “Belafonte”. The other 46 references to other songs by him in that same year, as well as every reference in every other year, spell his name correctly. Is this a website error or an original record label error? Or perhaps connected in some way to his true last name which is Bellanfanti? Is there an interest in knowing about errors(?) of this type (as I could submit over a hundred others)?