Robt kacha mma aha pụtara: Kechioma, Emesapụ aka, Oké njọ, Enyịn, Enyi na enyi. Nweta Robt pụtara aha.
Doukas kacha mma aha nna pụtara: Ifịk, Iwe, Enyi na enyi, Emesapụ aka, Kechioma. Nweta Doukas pụtara aha nna.
Aha ikpeazụ Doukas kasị nkịtị na Greece. Nweta Doukas aha nna na-agbasa.
Kasị nkịtị surnames na aha Robt: Shott, Mcclenny, Riddlebarger, Surina, Bloyd, McClenny. Nweta List of surnames na aha Robt.
Kasị nkịtị aha na aha ikpeazụ Doukas: Ayana, Robt, Geoffrey, Josh, Sara, Sára. Nweta Aha na-aga na Doukas.
Ndakọrịta nke Robt na Doukas bụ 77%. Nweta Ndakọrịta nke Robt na Doukas.