Miria is the Maori adaptation of Mary — used widely in New Zealand Maori communities.
Miria Bennett (born 1989) is the New Zealand Maori radio host.
Miria 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 Miria reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.