rękopismo (Polish) comes from Polish ręka, from Old Polish ręka, from Proto-Slavic rǫkà, from Proto-Balto-Slavic ránkāˀ, from Proto-Indo-European wrenk-, from Latvian wer- — to turn, to bend.
Ancestry of “rękopismo”, step by step
rękopismo traces back through two separate lines of ancestry.