Iefan kacha mma aha pụtara: Eru, Enyi na enyi, Kechioma, Okike, Enyịn. Nweta Iefan pụtara aha.
Udani kacha mma aha nna pụtara: Eji obi ụtọ, Kechioma, Enyi na enyi, Oké njọ, Emesapụ aka. Nweta Udani 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 Udani: Hunter, Siddharth, Ivan, Tamika, Killol, Iván. Nweta Aha na-aga na Udani.
Ndakọrịta nke Iefan na Udani bụ 78%. Nweta Ndakọrịta nke Iefan na Udani.