Thanks. Without a photo of it in place, or something else that proves its provenance, there is no way to use that attribution. Family stories are so often wrong, or change over the years--it's not considered a reliable source.
An SS Wandebehang, or tapestry, was an old folk art that was revived during the SS era to keep "pure" German heritage alive. These mimicked the designs used for generations by farmers. Traditionally, the SS family would keep these in a corner with a Yule chest, SS family book, and other SS memorabilia. Here are some links and articles:
Yours incorporates a number of images quite nicely--the German Eagle, ships, sun, moon, family, farming, and mythological creatures.
The value would be in the range of $3,500.00 - $4,500.00.