Tomyris (c. 530 BCE) was the Scythian-Massagetae queen who killed Cyrus the Great of Persia in 530 BCE — avenging her son's death by Cyrus's army. According to Herodotus, she had Cyrus's severed head placed in a wineskin filled with human blood — saying "You were thirsty for blood — now drink your fill." The first nomadic queen to defeat a Persian Achaemenid army.
Featured in Herodotus's Histories Book 1.
Tomyris 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 Tomyris reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.