Saxon

This name can also be FEMININE, making it UNISEX.
https://nameberry.com/babyname/Saxon/girl

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In the USA,throughout the 10s era, it was occasionally used as a FEMININE name with a total of 32 girls names SAXON from 1974-1978 with 7 girls named SAXON in 1974 and 1978.
Usage may be influence by a FEMALE character named Saxon Roberts: a character played by actress Myrtle Stedman in the film The Valley of the Moon (1914).
http://www.nancy.cc/baby-name/saxon/
http://www.nancy.cc/2018/01/26/rare-girl-names-early-cinema-s/
Later in the USA, it was just leaning as a feminine name with 10 girls named SAXON in 2007 and 8 girls named SAXON in 2009.

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In the UK, it had also been used as a FEMININE name for a while.
In 1998, 7 girls and 4 boys were named SAXON in the UK.
In 1999, 8 girls and 7 boys were also named SAXON in the UK.
http://names.darkgreener.com/#saxon
https://www.first-name.net/saxon#Info_UK

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A notable FEMININE name bearer is an ACTRESS: Saxon Sharbino.
Saxon Paige Sharbino (born June 11, 1999) is an American actress. She is known for portraying Amelia Robbins in the Fox series Touch and Kendra Bowen in the 2015 remake of Poltergeist.

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Sharbino was born in Lewisville, Texas, the daughter of Ron and Angela Sharbino. She began acting at the age of nine. Saxon is the older sister of Brighton Sharbino and Sawyer Sharbino. She attended Bridlewood Elementary School for a few years, choosing to finish her elementary schooling at home while focusing on her acting. She would later come back to Flower Mound and skip a grade when starting Downing Middle School. In 2013, she and her family moved to Los Angeles, California.

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https://en.wikipedia.org/wiki/Saxon_Sharbino

The name Saxon was given to 41 boys born in the US in 2015.

Saxon can be a girl name too.