One of the most evenly divided unisex names these days; strong and energetic, if overused, for both genders. 

Alex

Bill/Billie

Charlie is a friendly, boyish nickname name now used slightly more frequently for girls than boys, with over 2200 baby girls named Charlie last year versus about 2100 boys. That makes Charlie one of the most evenly-balanced and most <a href="https://nameberry.com/unisex-names">popular unisex names</a> around today. 
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The name Charlie, for females, has been jumping up the charts since it reappeared, after a 50-year hibernation, in 2005. With Charlotte now ranking solidly among the Top 10 girl names, there are even more little girl Charlies around than it might appear from the charts.
<br/><br/>Charlie has been a favorite for starbaby girls, including the twin daughter of Rebecca Romijn and Jerry O'Connell and the daughter of Julie Chen and Les Moonves. Jeremy Sisto has a hyphenated Charlie-Ballerina. 

Charlie

Erik

Fred

George 

Henry

Louis 

Rick

Will

undefined's list "A girl called Henry named Henrietta..." of 11 great name ideas: Alex - Will!

A girl called Henry named Henrietta...

Out of many female names you can create other, male names that could make a creative and unique nickname choice.

A girl called Henry named Henrietta...

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