When Maria Thomasdr was born on 23 February 1713, in Kälviä, Vaasa, Finland, her father, Thomas Thomasson Länttä, was 31 and her mother, Lisa Andersdr Rahkonen, was 31. She married Matthias Mattzson on 26 December 1733, in Kälviä, Vaasa, Finland. They were the parents of at least 4 sons and 5 daughters. She died on 24 February 1754, in her hometown, at the age of 41, and was buried in Kälviä, Vaasa, Finland.