Jayn is a girl name. It last appeared in U.S. Social Security records in 1959. Jayn first appears in the data in 1947 and reached its peak in 1954 (8 births). The chart below shows how the name has risen and fallen over time.
How popular is Jayn? (U.S. births per year)
U.S. births per year, 1947–1959 · hover or tap for the count and national rank · source: U.S. Social Security Administration