Nicholas Stephen Tyrol is the infant son of Galen Tyrol and Cally Henderson.
He was born some time between the end of "Lay Down Your Burdens, Part II" (c. day 680) and "Battlestar Galactica: The Resistance, Part I" (c. day 727).
Young Tyrol is dedicated to the service of Ares and Apollo, in "Battlestar Galactica: The Resistance, Part X."