Where does “Su” come from?

Su (Spanish) comes from French main, from Middle French main, from Old French main, from Latin manus, from Proto-Italic manus, from Proto-Indo-European man- — human being; man; hand.

Su (Spanish): his, her, its, one's, their, your (formal)

Definitions

his, her, its, one's, their, your (formal)

Ancestry of “Su”, step by step

Su traces back through two separate lines of ancestry.

via French main

Step	Language	Word	Meaning
1	French	main	hand; handball
2	Middle French	main	hand
3	Old French	main	hand
4	Latin	manus	hand; bravery, valor; violence, fighting
5	Proto-Italic	manus	hand
6	Proto-Indo-European	man-	human being; man; hand

via Latin suum

Step	Language	Word	Meaning
1	Latin	suum	accusative singular masculine of suus; nominative...
2	Proto-Italic	sowos	his, her, its, their
3	Proto-Indo-European	sewos	(one's) own; his, her, its
4	Proto-Indo-European	swé	self

Words derived from “Su”

su gracia
su
Sumain

Every word from Proto-Indo-European man- →Every word from Proto-Italic manus →Every word from Latin manus →