In order of rough time range: 

Agmundyr: 800-1000 (Roughly based on Erik the Red)
Theophania: 1350 - 1450 (Roughly based on the Hundred Years war)
Joanna Hawke: 1670-1720 (Golden Age of Piracy)
Kammu: 1810-1880 (Manifest Destiny)


Wonder if they ever compare notes lol



Kammu: "America invaded my lands"
Joanna: "Isn't America a British Colony?"
Agmundyr: "Britain has Colonies?
Theophania: "...What's America?"