Where does “Deboer” come from?

Deboer (English) comes from Dutch de Boer, from Dutch de, from Middle Dutch die, from Old Dutch thie, from Old Dutch thē, from Proto-Germanic *sa, from Proto-Austronesian *əsa, from Proto-Oceanic *isa.

Ancestry of “Deboer”, step by step

Step	Language	Word	Meaning
1	Dutch	de Boer	—
2	Dutch	de	the
3	Middle Dutch	die	the; definite article; that, those; who, which,...
4	Old Dutch	thie	that, that one; that
5	Old Dutch	thē	—
6	Proto-Germanic	*sa	—
7	Proto-Austronesian	*əsa	—
8	Proto-Oceanic	*isa	—

Every word from Proto-Oceanic *isa →