Details
- Said to be the same as
- William, Wilhelm, Guillaume, Bill, Guillén, Willem, Guilherme, Vilém, Vilmos, Will, Guillermo, Gulielmus
- Caverphone
- KLM111
- Cologne phonetics
- 456
- family name identical to this given name
- Guillem
- native label
- Guillem
- Soundex
- G450
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