Jehan kacha mma aha pụtara: Enyi na enyi, Kechioma, Emesapụ aka, Oge a, Ifịk. Nweta Jehan pụtara aha.
Trefz kacha mma aha nna pụtara: Oge a, Obodo, Enyịn, Okike, Enyi na enyi. Nweta Trefz pụtara aha nna.
Jehan si malite aha mbụ. Old French form of Iohannes (see John). Nweta Jehan si malite aha mbụ.
Agakọta aha maka Jehan 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, Ianto, Iefan, Ieuan, Ifan, Ioan, Ioane, Ioann, Ioannes, Ioannis, Iohannes, Ion, Ionel, Ionuț, Iván, Ivan, Ivane, Ivano, Ivica, Ivo, Iwan, Jaan, Jānis, Jack, Jackie, Jackin, Jake, Ján, Jancsi, Janek, Janez, Jani, Janika, Jankin, Janko, Janne, Jannick, Jannik, Jan, Jan, János, Janusz, Jean, Jeannot, Jehohanan, Jens, Jo, João, Joannes, Joan, Joãozinho, Joĉjo, Jock, Jockie, Jocky, 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, Seoc, Shane, Shaun, Shawn, Shayne, Siôn, Sjang, Sjeng, Van, Vanja, Vanni, Vano, Vanya, Xoán, Xuan, Yahya, Yan, Yanick, Yanko, Yann, Yanni, Yannic, Yannick, Yannis, Yehochanan, Yianni, Yiannis, Yoan, Yochanan, Yohanes, Yuhanna, Zuan, Žan. Nweta Jehan na ndị ọzọ asụsụ.
Kasị nkịtị surnames na aha Jehan: Sogocio, Khan, Shafeeque, Gowani. Nweta List of surnames na aha Jehan.
Kasị nkịtị aha na aha ikpeazụ Trefz: Raymonde, Trenton, Gunnar, Margarito, John. Nweta Aha na-aga na Trefz.
Ndakọrịta nke Jehan na Trefz bụ 77%. Nweta Ndakọrịta nke Jehan na Trefz.