Looking for Any Info Re Johana Wilhelmine Friederici Born IN Memel E

Looking for any info re: JOHANA WILHELMINE FRIEDERICI
bORN IN Memel, E. Prussia 7 Mar 1864
Mother: Bertha Friederici
Spouse: Eduard Johann Engelke Born 1866, died 1933 or 34

Died: approx 1951 in Koln Germany
Son: Emil Ferdinand Engelke Koln, Germany (deceased)

Grandson: Otto Engelke Koln, Germany

I am looking for any information about the above listed
persons. Georg Friederici has been unable to help me.