In 2018, 56 is the most common age for an American (U.S.) Marian who is registered female with the Social Security Administration. It is the 581st most common female first name for living U.S. citizens.
― Anonymous User 10/12/2018
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The name Marian was given to 233 girls born in the US in 2015.
https://www.stat.ee/public/apps/nimed/