Found 2 boys and girls with the meaning of serene
Ana / 3 letters 
Meaning of Ana In Hebrew, Ana means Grace More
Serena / 6 letters 
Meaning of Serena In Italian, Serena means Calm; tranquil More

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wickednesswidowwigwam
wildernesswill'swill-helmet
willfulwilliamwilloughby
willowwinchwinchester
windingwindowwindsor
windywine'swinged
wingswinsor'swinter