Saint Symphorosa (d. c. 138) was the Roman widow of Tibur — she and her seven sons were all martyred together under Emperor Hadrian, the New Testament Maccabees parallel.
Her relics are at the Capitoline.
Symphorosa 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 Symphorosa reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.