Hi! I beg to disagree with Lena, Anna Hägg was born on 24.10 1902 and in Välluv, not Kropp. There are a few Teresia born in the same time frame in Välluv, and one Therese Sonesson born in Kropp on 18 September 1898, widowed 21.4.1983 and died in Landskrona on 21.5.1995 (street adress Fröjdenborgsgatan).
The mother's name Carolyn is anglized, probably Karolina or something similar, spelling C or K and e or a at the end.
The source we both use is a cd called Sveriges dödbok (the Swedish Deathbook) 1950-1999, from The Federation of Swedish Genealogical Societies.
The towns (villages) Kropp and Välluv (as well as Mörarp which Karin mentions) are situated close to Helsingborg and Maria is one of the city parishes in Helsingborg, Filborna is also a part of Helsingborg.
You may check names and addresses for the families of the siblings through their estate inventories (bouppteckning in singularis in Swedish) made after their deaths. These are as of July 1, 2001, kept at (or in transfer) the Regional Archives, in this case in Lund, at landsarkivet@landsarkivet-lund.ra.se .
Good luck!
Kind regards,
Eva Dahlberg