Where does “getteson” come from?

getteson (Anglo-Norman) comes from Old French getaison, from Latin iactō, from Latin iaciō, from Proto-Indo-European (H)yeh₁- — to throw.

Ancestry of “getteson”, step by step

Step	Language	Word	Meaning
1	Old French	getaison	a throwing
2	Latin	iactō	to throw, cast, hurl
3	Latin	iaciō	to throw, hurl, cast, fling; throw away
4	Proto-Indo-European	(H)yeh₁-	to throw