Eduard Johann Engelke of Memel E Prussia

I am looking for any information re my grandparents who
came from Memel, E. Prussia. EDUARD JOHANN ENGELKE was
born in 1860 or 1866. His spouse was:WILHELMINE JOHANNA
FRIEDERICI born 1864 or 1871 in Memel. Eduard was an
"arbeiter" worker. He died in 1933 or 1934.