Hello,
Oreinenbaum could be 06785 Oranienbaum in Sachsen-Anhalt south/east of
Dessau
Reidersburg/Reidersberg could eventually be Reideburg - today a district
(quarter) of 06116 Halle/Saale
Try Google maps - >> Halle Saale Reideburg <<
Distance between both places - about 55 to 60 km
Christine