They were never mentioned in canon nor in filler
. Life of minato
. Introduction
January 25th is Minato Namikaze's birthday
Minato's reign was short, and it lasted for just 2-3 years. Since Minato died at the age of 24, it can be assumed that he became the Hokage at the age of 21 at the maximum
Minato namikaze Uzumaki, 1914 - 1945 Minato namikaze Uzumaki was born on month day 1914. Minato married Kushina uzumaki Namikaze on month day 1930, at age of 16