In 2018, 83 is the most common age for an American (U.S.) Mildred who is registered female with the Social Security Administration. It is the 287th most common female first name for living U.S. citizens.
― Anonymous User 10/8/2018
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The name Mildred was given to 86 girls born in the US in 2015.
While it was in the top 10 for girls in the United States in the first three decades of the 20th century, it was also used on rare occasions as a boy's name there in the 1900s and 1910s, but had by the 1920s dropped out of the boys' top 1,000 and is virtually unknown in that role today.
Supposing this name doesn't become cool again even in 20 years time? Supposing our granddaughters are not named Mildred or Edna but Janet or Carol or Maureen if names like Violet, Elizabeth, and Hannah are popular at the present time? Some of the 1900s to 1930s - excluding Mildred - may be all the rage now, but I think more sooner than later it will be 1940s and 1950s names in 20 years' time.
Mildritha is another form. Source: https://www.medievalists.net/2023/11/old-english-girls-names/
Mildreth, Mildredd, Meldred, Meldreth, Meldryth, Meldryd and Mildrath are other forms. Source: https://www.houseofnames.com/au/meldred-family-crest