ակնաղբևր (Old Armenian) comes from Old Armenian աղբեւր, from Old Armenian աղբիւր, from Proto-Indo-European bʰréh₁wr̥, from Proto-Indo-European bʰrewh₁-, from Proto-Indo-European bʰer- — to bear, carry.
Ancestry of “ակնաղբևր”, step by step
ակնաղբևր traces back through two separate lines of ancestry.