Not to contradict too strenuously PD, there is however this entry on the NET:
where did the pop group Boney M get their name? | Yahoo Answershttps://au.answers.yahoo.com/question/index?qid=20060921051651AA5pmEl14 answers
In fact
the name is an homage to
the classic rock and roll song,
Boney Maroni which
was a hit for several classic acts including Showaddywaddy who were very ...
Aussie contribution too is mentioned; the dispute could be settled by establishing
the time-line of name suggestions.
It appears to me that
Boney Maroni may have been the Originator.
Not taking any bets on it.
Cheers,