The boy's name Wilhelmus \wi-lhel-mus, wil-helmus\ is a variant of William.
The baby name Wilhelmus sounds like Willhelmus and Wilhelm.
Wilhelmus is a very rare male first name and a very rare surname (source: 1990 U.S. Census). Displayed below is the baby name popularity trend for the boy's name Wilhelmus. Click here to compare Wilhelmus with related baby names.
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