Iefan tikanga ingoa pai: Mātau, Ratarata, Waimarie, Auaha, Tahuri. Haere Iefan tikanga o te ingoa.
Jay pai tikanga ingoa: Ratarata, Hou, Nui, Ahua, Koa. Haere Jay tikanga o ingoa.
Iefan takenga o te ingoa tuatahi. Welsh form of John. Haere Iefan takenga o te ingoa tuatahi.
Iefan diminutives ingoa: Ianto. Haere I tapaina a hoki Iefan.
Ingoa whakamutunga Jay tino noa i roto i Wallis me Whutuna. Haere Jay ingoa horahanga.
Ingoa faaauhia hoki Iefan i roto i whenua rerekē me ngā reo: 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. Haere Iefan i ētahi atu reo.
Te nuinga ingoa noa ki te ingoa whakamutunga Jay: John, Clarisa, Jeevan, Kumar Jay Shree Ram, Teddy. Haere Ingoa e haere ki Jay.
Hototahi o Iefan a Jay he 80%. Haere Hototahi o Iefan a Jay.