ווײַסרוסלאַנד (Yiddish) comes from Yiddish רוסלאַנד, from Yiddish לאַנד, from Middle High German lant, from Old High German lant, from Proto-West Germanic land, from Proto-Germanic landą, from Proto-Indo-European lendʰ- — land, heath; loins.
Ancestry of “ווײַסרוסלאַנד”, step by step
ווײַסרוסלאַנד traces back through two separate lines of ancestry.