Iefan kacha mma aha pụtara: Eru, Enyi na enyi, Kechioma, Okike, Enyịn. Nweta Iefan pụtara aha.
Cassiday kacha mma aha nna pụtara: Enyi na enyi, Emesapụ aka, Eru, Ifịk, Eji obi ụtọ. Nweta Cassiday pụtara aha nna.
Iefan si malite aha mbụ. Welsh form of John. Nweta Iefan si malite aha mbụ.
Iefan aha diminutives: Ianto. Nweta Nicknames maka Iefan.
Agakọta aha maka Iefan na mba dị iche iche na-asụ asụsụ: Anže, Deshaun, Deshawn, Ean, Eoin, Evan, Ganix, Ghjuvan, Gian, Gianni, Giannino, Giannis, Giovanni, Gjon, Hampus, Hank, Hanke, Hankin, Hann, Hanne, Hannes, Hannu, Hans, Hasse, Honza, Hovhannes, Hovik, Hovo, Iain, Ian, Iancu, Ioan, Ioane, Ioann, Ioannes, Ioannis, Iohannes, Ion, Ionel, Ionuț, Iván, Ivan, Ivane, Ivano, Ivica, Ivo, Iwan, Jaan, Jānis, Jackin, Ján, Jancsi, Janek, Janez, Jani, Janika, Jankin, Janko, Janne, Jannick, Jannik, Jan, Jan, János, Janusz, Jean, Jeannot, Jehan, Jehohanan, Jens, Jo, João, Joannes, Joan, Joãozinho, Joĉjo, Johan, Johanan, Johann, Johannes, Johano, John, Johnie, Johnnie, Johnny, Jón, Jonas, Jone, Joni, Jon, Jon, Jóannes, Jóhann, Jóhannes, Joop, Jouni, Jovan, Jowan, Juan, Juanito, Juha, Juhán, Juhan, Juhana, Juhani, Juho, Jukka, Jussi, Keoni, Keshaun, Keshawn, Nelu, Nino, Ohannes, Rashaun, Rashawn, Seán, Sean, Shane, Shaun, Shawn, Shayne, Sjang, Sjeng, Vanni, Vano, Vanya, Xoán, Xuan, Yahya, Yan, Yanick, Yanko, Yann, Yanni, Yannic, Yannick, Yannis, Yehochanan, Yianni, Yiannis, Yoan, Yochanan, Yohanes, Yuhanna, Zuan, Žan. Nweta Iefan na ndị ọzọ asụsụ.
Kasị nkịtị aha na aha ikpeazụ Cassiday: Darin, John, Ramiro, Ezekiel, Dominick. Nweta Aha na-aga na Cassiday.
Ndakọrịta nke Iefan na Cassiday bụ 82%. Nweta Ndakọrịta nke Iefan na Cassiday.