When Mariam Trefinger was born on 1 August 1720, in Lainthal Zwei, Leoben, Styria, Austria, her father, Rupert Trefinger, was 33 and her mother, Elisabetha Timkerin, was 27. She married Mathias Luef on 4 June 1742, in Lainthal Zwei, Leoben, Styria, Austria. They were the parents of at least 3 sons and 3 daughters.
Some characteristic forenames: German Fritz.
South German: probably derived from Middle High German treff- ‘fitting, excellent, hitting the nail on the head’, hence a nickname for a successful person.