Iefan kacha mma aha pụtara: Eru, Enyi na enyi, Kechioma, Okike, Enyịn. Nweta Iefan pụtara aha.
Nicholas kacha mma aha nna pụtara: Oké njọ, Oge a, Eji obi ụtọ, Enyịn, Eru. Nweta Nicholas 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.
Aha ikpeazụ Nicholas kasị nkịtị na Belize, Papua New Guinea, Saint Lucia, Trinidad na Tobago, United Kingdom. Nweta Nicholas aha nna na-agbasa.
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 Nicholas: Nestor, Martin, Ross, Resa Nicholas, Launa, Martín. Nweta Aha na-aga na Nicholas.
Ndakọrịta nke Iefan na Nicholas bụ 73%. Nweta Ndakọrịta nke Iefan na Nicholas.