Where does “долгорукий” come from?

долгорукий (Russian) comes from Russian рука́, from Old East Slavic рѫка, from Proto-Slavic rǫka, from Proto-Balto-Slavic ránkāˀ, from Proto-Indo-European wrenk-, from Latvian wer- — to turn, to bend.

долгорукий (Russian): long-armed

Definitions

long-armed

Ancestry of “долгорукий”, step by step

долгорукий traces back through two separate lines of ancestry.

via Russian рука́

Step	Language	Word	Meaning
1	Russian	рука́	arm, hand; hand
2	Old East Slavic	рѫка	—
3	Proto-Slavic	rǫka	hand; arm
4	Proto-Balto-Slavic	ránkāˀ	hand, arm
5	Proto-Indo-European	wrenk-	to turn, twist, bend
6	Latvian	wer-	to turn, to bend

via Russian до́лгий

Step	Language	Word	Meaning
1	Russian	до́лгий	long
2	Proto-Slavic	dь̀lgъ	long
3	Proto-Balto-Slavic	dílˀgas	long
4	Proto-Indo-European	dl̥h₁gʰós	long

Every word from Latvian wer- →Every word from Proto-Indo-European wrenk- →Every word from Proto-Balto-Slavic ránkāˀ →