head of a family; first name on a list
Refers to the person whose name appears first in a register or list, often the family head in official documents.
The head of the family on the family register is my father.
His name is listed as the first name on the roster.
Compound of 筆頭 (ひっとう, 'top of the list') + 者 (しゃ, 'person').