Faith comes from the Old French feid, from the Latin fides, meaning "trust" or "belief." It became a Puritan virtue name in 17th-century England, given alongside Hope and Charity (the three theological virtues of 1 Corinthians 13).
Faith entered the U.S. top 1000 in 1880 and has remained continuously. It surged in the late 1990s and peaked at #48 in 2002. Today it sits in the U.S. top 200 — direct, faithful, with no equivocation.
Faith reduces to nine — the number of devoted purpose.