Martha Weiss

Born: 12 August 1745, Mulhouse
Died: 24 January 1839, location unknown, but it wasn't Mulhouse

Father: Hans Jacob Weiss, 1703-1784
Mother: Martha Schlumberger, 1705-1767

Spouse 1: Hans Michael Zetter, 1744-
Married on 24 November 1766, Mulhouse.

Spouse 2: Johannes Schoen, 1748-1818
Married on 7 October 1784, Mulhouse.

Biographical information
Martha left her husband Hans Michael Zetter, and joined her brother, Gaspard in London shortly after Gaspard and Marie married, and lived there with them from 1775 until 1783. Apparently she filed for divorce from London, and when she returned to Mulhouse, she married Johannes Schoen.

Reference
Bonz, T. and Michelon, E. (Eds.) Jean Gaspard Weiss Autobiographie: Lebens- und Reisebericht eines Musikers aus dem 18. Jahnhundert. Orts Musikverlag, Beeskow.