Submitted names are contributed by users of this website. The accuracy of these name definitions cannot be guaranteed.
Meaning & History
O ("Big,Great") + Otono (this is a very respectful honorific that is outdated and literally means "Lord"). Regardless of how archaic it seems,this last name is still used by families in Japan, even though it rarely ever occurs.
--Honest Source : a Yahoo link (check notes for specification, if you'd like).