Note, on Taala, the ones I've known are from the Sa'ami areas in Northern Sweden, Eastern Norway, and Lapland County. What we are talking about here is a case where there's been a fair amount of vocabulary slopover from one language to another.
Until the finding that the Sa'ami were likely the OLDEST population in the Fenno-Scandian peninsula many philologists were of the opinion that the various Sa'ami languages arose out of a common background with Finnish and Estonian.
Once it was determined that the Sa'ami were the OLDEST population in the peninsula, they've gravitated to analysis showing the linguistic flow to be from the Sa'ami languages to the FennoScandian group.
Sapala is the surname of a famous Kven from Norway who had a dog named Balto in Alaska. He and the dog became heros. Regarding the Kvens, they are recent arrivals in the Arctic ~ almost forgot about them ~ but they have a name for the region where they went to fish on the Arctic back during the centuries when they just went up seasonally. They called it "Ruija" which is incredible ~ I had not noticed that before.
This "ruija" is part of the name applicable to the bottom lands near Seymour, Columbus and North Vernon Indiana. Our word is Ama-roosia or Ama-ruija (so maybe you can tell me what the Ama means). The capital city of Lapland County in Finland, in Skolt, is very nearly the same word group but "backwards".
But going beyond Leonard Sappala, I've met many other Sappala surnamed people over the years and they were Sa'ami. Not ruling out a few of them selfidentifying as Norwegian or Finnish, but how about the Keppel family?