Maiara is a top 100 name in Portugal (so is Mayara) and I somehow doubt that most of the people who used it have Tupi ancestry. Still you will find this name a lot within that country and it seems to be considered completely normal there. Of course Brazil and Portugal are connected in many ways but I still don't think Tupi ancestry is common. I personally don't think you have to worry or ask permission if the name is clearly in popular use.
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https://www.behindthename.com/pnl/6232This message was edited 4/7/2021, 8:05 AM