Tetisheri (c. 1575 BCE) was the great matriarch of the Egyptian 18th Dynasty — wife of Senakhtenre Ahmose I, mother of Seqenenre Tao and Queen Ahhotep, grandmother of King Ahmose I.
Her mummy was found in the Deir el-Bahari cache.
Tetisheri 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 Tetisheri reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.