In 2018, 3 is the most common age for an American (U.S.) Ariana who is registered female with the Social Security Administration. It is the 703rd most common female first name for living U.S. citizens.
― Anonymous User 10/15/2018
3
Actually, this name isn't that modern. On Find a Grave, I found at least four bearers (all female) from the 18th and 19th centuries, the earliest being born in 1755. The name seems to have dropped out of use sometime during the mid-19th century, and then revived well over a century later. Obviously it was nowhere near as common back then as it has been in the past few decades.