Where does “söszkone” come from?
söszkone (Old Swedish) comes from Old Norse systkin, from Old Norse systir, from Proto-Norse ᛊᚹᛖᛊᛏᚨᚱ, from Proto-Germanic swestēr, from Proto-Indo-European swésōr, from Proto-Indo-European su-h₁ésh₂-ōr, from Proto-Indo-European h₁ésh₂r̥ — blood.
Ancestry of “söszkone”, step by step
Words derived from “söszkone”