Bridget comes from the Irish Brigid — the name of one of the most important goddesses of pre-Christian Ireland, associated with poetry, healing, and the forge. When Ireland converted to Christianity, the goddess Brigid was absorbed into the figure of Saint Brigid of Kildare (c. 451-525), one of the patron saints of Ireland.
Bridget has been in continuous use in Ireland and the broader English-speaking world for over a thousand years. Today it sits in the U.S. top 500.
Bridget 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 Bridget reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.