Tar-Ancalimë was the first Ruling Queen of
Númenor, and the seventh
ruler. She was the daughter of Tar-Aldarion,
who changed the laws
of sucession so that the eldest child that accepts the scepter, be they
man or woman, may take the Kingship of Númenor.
She married Hallacar, mainly so she could produce an heir so her cousin, Soronto, could not claim the throne.
She was suceeded by her son, Tar-Anárion.
Reference: The Return of the King