I am pretty confident that we are talking about the same persons, so here is the info I have so far. Sigri was born 7 Mar 1855 in Hedmark, Norway. She was christened 5 Apr 1855 in Tylldal, Hedmark, Norway (the same place I believe her to have been born.) Her birth name was Sigri Ottersdatter, Flatten (or Flotten, Flaten) was the farm name. They used this farm name as their last name sometimes in America. She was the daughter of Otter Larsen (Flatten farm) b. 9 May 1830 also in Tylldal, Hedmark, Norway, d. unknown (assumption is that he died in US but have not found burial yet) and Sigri O. Larsdatter (farm Moen) b. 1822 in Tylldal, Hedmark, Norway, d. 13 Oct 1879 in Wisconsin and is buried in Old Our Savior's Lutheran Cemetery, Martell Township, Pierce County, Wisconsin. Otter and Sigri had five children that I know of thus far: Beret (Berit and also went by Betsy) Ottersdtr who married Svend (went by Sam) Anderson; Simon Ottersen; Lars Ottersen who died in Norway at age 9; Elizabeth Ottersdtr who died here in America at around age 8; and Sigri who married Peter Hindahl. I have located a copy of the Ellis Island record where Sigri traveled with her sister Beret (Betsy) from Norway. If interested, let me know and I can send that to you.
Sigri's father's side:
Otter Larsen (Flatten) was the son of Lars Ottersen and Beret Olsdatter (Graven). Together they had at least five children that I am aware of: Otter Larsen; Ole Larsen; Beret Larsdtr; Maret Larsdtr; and Sigri Larsdtr. (Yes, Otter Larsen also had a sister named Sigri Larsdtr as was the name of his wife.)
Lars Ottersen was the son of Otter Olsen (Overby) and Sigre Larsdtr (Brandold or Brandvold).
Sigri's mother's side:
Sigri O. Larsdtr (Moen) was the daughter of Lars (Moen) and Sigi (Olesbar). I am sorry, but at this point, this is all the information that I have of them. Toghether they had four children that I know of: Sigri; Ole Larsen; Katy Larsdtr; Sven Larsen.
I descend from Beret (Berit, Betsy) and would love to connect with you or anyone else related to this family. Please email me at the address listed under my name.