I have a female ancestor named this, born in 1811 in Georgia, USA.

The main character in Tuck Everlasting, a famous book.

According to the Oxford Dictionary of First Names, Winfred is a unisex name. I like it for a middle name for a girl, the meaning is lovely.

My name is Winifred. I go by Win and Winnie. As a 5 year old, I didn't like my name. Everyone else was a Karen, Stacy, Chrissy, or Linda. As I have gotten older, I have grown into it. I like it. It is different.

I am surprised at how often I say Win over the phone, and my name gets written as Lynn, Gwen, or Nguyen. When it gets spelled Nguyen, there is always confusion when this tall blonde shows up!