If you support the Stormcloaks for the Civil War quest, then yes, Jarl Ulfric will become High King of Skyrim. If you join the Imperial Legion, he is killed.
Jarl Ekenryd's birth name is Jarl Ekenryd.
Jarl Lindblad's birth name is Jarl Martin Lindblad.
Jarl Forsmann's birth name is Forsmann, Jarl Mikael.
Jarl Victor's birth name is Jarl E. Victor.
Jarl Hamilton's birth name is Jarl Hugo Friis Hamilton.
Jarl goes by Jarly.
Jarl Lundqvist died in 1965.
Jarl Lundqvist was born in 1896.
Jarl Jakobsson was born in 1880.
Jarl Jakobsson died in 1951.
Jarl Goli was born in 1957.