The Baron grandmaster story is weird
Chess titles are awarded by FIDE an internation body that use rating / tournanent score to assign numeric ranks.
The August 2018 FIDE rating list records 1624 players holding the GM title, of whom 37 (~2%) are women.[5]
At 12 years and 7 months, Sergey Karjakin became the youngest person to qualify for the Grandmaster title.