Rb is a boy name. It last appeared in U.S. Social Security records in 1994. Rb first appears in the data in 1920 and reached its peak in 1920 (5 births). The chart below shows how the name has risen and fallen over time.
How popular is Rb? (U.S. births per year)
U.S. births per year, 1920–1994 · hover or tap for the count and national rank · source: U.S. Social Security Administration