Who is Mr. Orban from Lily's Crossing and what is their importance?

Emery and Eva Orban are neighbors of the Mollahans. A friendly couple, Mrs. Orban is known in the small Rockaway community (certainly by Lily) as a wonderful cook. Mr. Orban is an affable older gentleman who is one of Lily's favorite people. Mr. and Mrs. Orban are also Albert and Ruth's uncle and aunt. It is assumed that the Orbans are from Hungary like Albert and Ruth.