Iefan moelelo wa lebitso le letle: E na le bokhoni, Botsoalle, Lehlohonolo, Bōpo, Ela hloko. Fumana Iefan moelelo oa lebitso.
Jay lebitso la motumo o motle ka ho fetisisa: Botsoalle, Mehleng ea kajeno, E tebileng, E fokolang, E thabileng. Fumana Jay se boleloang ke lebitso.
Iefan tšimoloho ea lebitso la pele. Welsh form of John. Fumana Iefan tšimoloho ea lebitso la pele.
Iefan lebitso la diminuti: Ianto. Fumana Mabitso a marang-rang a Iefan.
Lebitso la ho qetela Jay le tloaelehileng haholo Wallis le Futuna. Fumana Jay lebitso la lebitso le fetisetsang.
Mabitso a sa tšoaneng bakeng sa Iefan linaheng le lipuo tse sa tšoaneng: 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. Fumana Iefan ka lipuo tse ling.
Mabitso a tloaelehileng ka lebitso la ho qetela Jay: Jeevan, Kumar Jay Shree Ram, Teddy, Jithin, Natalia, Natália. Fumana Mabitso a tsamaeang le Jay.
Ho lumellana ha Iefan le Jay ke 80%. Fumana Tšebelisano ea Iefan le Jay.