Guillermo is a Spanish variant of William. The name William is a very common English name, originating in Germanic languages. It is derived from the words 'wil', which means 'of strong mind', and 'helm', which translates into 'a helmet'.
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Guillermo is a Spanish variant of William. The name William is a very common English name, originating in Germanic languages. It is derived from the words 'wil', which means 'of strong mind', and 'helm', which translates into 'a helmet'.