kultahiiri (Finnish) comes from Finnish kulta, from Proto-Finnic kulta, from Proto-Germanic gulþą, from Proto-Indo-European ǵʰl̥tóm, from Proto-Indo-European ǵʰelh₃- — to flourish; green, yellow.
Ancestry of “kultahiiri”, step by step
kultahiiri traces back through two separate lines of ancestry.