Friederich married Anna Wilhelmine Barth 25 Jul 1891, Marbach, Neckarkreis, Wurttemburg, Germany. Anna (daughter of Julius Rudolph Friedrich Barth and Friederike Wilhelmine Hafner) was born 1 Feb 1867, Marbach, Neckarkreis, Wurttemburg, Germany; was christened 22 Feb 1867, Marbach, Neckarkreis, Wurttemburg, Germany. [Group Sheet]