The big fire in Umeå was in 1888, June 25, when most of the wooden town with it's narrow streets was destroyed. Maria Johanna emigrated a few days later. After the reconstruction there were broader streets and avenues with a lot of birches to prevent fires to spread. That's why Umeå is called "City of birches". https://sv.wikipedia.org/wiki/Stadsbranden_i_Ume%C3%A5
The guy Sjöström on line 23 (page 126 in AI:15b) has probably nothing to do with your family. He just lived in the same place. But on line 17 there is a Miss Lovisa Karolina Rönnlund.
Retrospectively, now that you guys have taught me some Umeå history, do you think it would be possible to determine if the guy Sjöström on line 23 was a member of the ungliga Norrlands Dragonregemente?