Where does “Oostenryk” come from?

Oostenryk (Afrikaans) comes from Dutch Oostenrijk, from Dutch -er, from Old Dutch -āri, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Ancestry of “Oostenryk”, step by step

Step	Language	Word	Meaning
1	Dutch	Oostenrijk	—
2	Dutch	-er	Forms agent nouns from verbs; Forms nouns for a...
3	Old Dutch	-āri	—
4	Proto-Germanic	-ārijaz	-er
5	Latin	-ārius	er
6	Proto-Italic	*-āzios	Forms relational adjectives to nouns (and rarely numerals)

Words derived from “Oostenryk”

Oostenryks

Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Dutch -er →