Klaes kacha mma aha pụtara: Oké njọ, Oge a, Enyịn, Iwe, Okike. Nweta Klaes pụtara aha.
Duka kacha mma aha nna pụtara: Okike, Oké njọ, Eru, Ifịk, Oge a. Nweta Duka pụtara aha nna.
Klaes si malite aha mbụ. Frisian short form of Nicholas. Nweta Klaes si malite aha mbụ.
Aha ikpeazụ Duka kasị nkịtị na Albania. Nweta Duka aha nna na-agbasa.
Agakọta aha maka Klaes na mba dị iche iche na-asụ asụsụ: Cai, Caj, Claes, Claus, Col, Colin, Collin, Kai, Kaj, Kay, Klaas, Klaos, Klas, Klaus, Kolos, Miklavž, Miklós, Mikołaj, Mikoláš, Miksa, Mikula, Mikuláš, Mykola, Neacel, Neculai, Nels, Nic, Niccolò, Nichol, Nicholas, Niĉjo, Nick, Nickolas, Nickolaus, Nicky, Nico, Nicol, Nicola, Nicolás, Nicolaas, Nicolae, Nicolao, Nicolaos, Nicolas, Nicolau, Nicolaus, Nicolò, Nicu, Nicușor, Niek, Niels, Nigul, Niilo, Nik, Nika, Niklas, Niklaus, Niko, Nikola, Nikolaas, Nikolai, Nikolaj, Nikolajs, Nikolao, Nikolaos, Nikolas, Nikolaus, Nikolay, Nikoloz, Nikora, Nikusha, Nils, Nioclás. Nweta Klaes na ndị ọzọ asụsụ.
Kasị nkịtị aha na aha ikpeazụ Duka: Brent, Arber, Jewell, Michael, Ardith, Michaël. Nweta Aha na-aga na Duka.
Ndakọrịta nke Klaes na Duka bụ 80%. Nweta Ndakọrịta nke Klaes na Duka.