Steinunn Refsdóttir (c. 950-c. 1010) was the Icelandic skaldic poet who, when the Christian missionary Þangbrandr came to Iceland, composed scornful pagan verses against him, claiming Thor had crashed his ship.
Featured in Njáls saga and Kristni saga.
Steinunn 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 Steinunn reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.