Where does “arqueiro” come from?

arqueiro (Portuguese) comes from Old Portuguese arqueiro, from Late Latin arcarius, from Latin arcuarius, from Latin arcus, from Latin solium, from Proto-Indo-European sodyom, from Proto-Indo-European sḗd- — to sit.

arqueiro (Portuguese): archer; bowman; archer; goalkeeper

Definitions

archer; bowman; archer; goalkeeper

Ancestry of “arqueiro”, step by step

Step	Language	Word	Meaning
1	Old Portuguese	arqueiro	archer; bowman
2	Late Latin	arcarius	cash, treasury
3	Latin	arcuarius	bow
4	Latin	arcus	arc, arch; bow; rainbow
5	Latin	solium	seat, chair; throne, chair of state, official...
6	Proto-Indo-European	sodyom	—
7	Proto-Indo-European	sḗd-	to sit

Every word from Proto-Indo-European sḗd- →Every word from Proto-Indo-European sodyom →Every word from Latin solium →