Grace comes from the Latin gratia, meaning favour, thanks, or divine grace — the unearned love that, in Christian theology, comes from God. It was a Puritan virtue name, used by English families from the seventeenth century alongside Faith, Hope, Charity, and Patience.
The name has stayed in the U.S.
Grace does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Grace reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.