Jonasson is a surname of Swedish origin. Spelled 'Jónasson', it refers to an Icelandic surname, although Canadians of Icelandic descent are likely to spell it with the accent mark. People with the surname Jonasson include: Einar Jonasson (1887–1935), Canadian politician from Manitoba; provincial legislator. Frank Jonasson (1878–1942), American film actor of the silent-film era. Jonas Jonasson (b. 1961) Swedish writer. Mats Jonasson (b. 1945), Swedish glass designer. Niclas Jonasson (b. 1976), Swedish orienteering champion.
https://en.wikipedia.org/wiki/Jonasson