Complex sentence: His mother was Anna Maria Haenni (1869--1950), she was the Protestant daughter of a master tailor and native of Uttigen-Kinnersrüti near Bern.
Split into simpler sentences: His mother was Anna Maria Haenni (1869--1950). She was the Protestant daughter of a master tailor and native of Uttigen-Kinnersrüti near Bern.