Washington

As Guasguendi pointed out, this name is very very popular in Brazil, so probably the Brazilian usage tag should be added to the entry. Not only that, there has been a president of Brazil named Washington: https://en.m.wikipedia.org/wiki/Washington_Lu%C3%ADs [noted -ed]

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Also, other famous Brazilian bearers:
• https://pt.m.wikipedia.org/wiki/Washington_Stecanela_Cerqueira
• https://pt.m.wikipedia.org/wiki/Washington_Rodrigues
• https://pt.m.wikipedia.org/wiki/Washington_Reis
• https://pt.m.wikipedia.org/wiki/Washington_Cruz
• https://pt.m.wikipedia.org/wiki/Washington_C%C3%A9sar_Santos
• https://pt.m.wikipedia.org/wiki/Washington_Luiz_de_Paula

Also Portuguese (Brazilian): https://www.behindthename.com/name/washington/top/brazil

I notice names like this are often used as first names in Brazil and Latin America.