Jackin kacha mma aha pụtara: Obodo, Enyịn, Eru, Iwe, Enyi na enyi. Nweta Jackin pụtara aha.
Downey kacha mma aha nna pụtara: Enyi na enyi, Oké njọ, Enyịn, Obodo, Okike. Nweta Downey pụtara aha nna.
Jackin si malite aha mbụ. Variant of Jankin. Nweta Jackin si malite aha mbụ.
Agakọta aha maka Jackin na mba dị iche iche na-asụ asụsụ: Anže, Deshaun, Deshawn, Ean, Eoin, Evan, Ganix, Ghjuvan, Gian, Gianni, Giannis, Giovanni, Gjon, Hanke, Hanne, Hannes, Hannu, Hans, Hovhannes, Iain, Ian, Iefan, Ieuan, Ifan, Ioan, Ioane, Ioann, Ioannes, Ioannis, Iohannes, Ion, Iván, Ivan, Ivane, Ivano, Iwan, Jaan, Jānis, Jack, Jackie, Jake, Ján, Jancsi, Janek, Janez, Jani, Janika, Janko, Janne, Jannick, Jannik, Jan, János, Janusz, Jean, Jeannot, Jehan, 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, Rashaun, Rashawn, Seán, Sean, Seoc, Shane, Shaun, Shawn, Shayne, Siôn, Sjang, Sjeng, Vanni, Xoán, Xuan, Yahya, Yanick, Yann, Yanni, Yannic, Yannick, Yannis, Yehochanan, Yianni, Yiannis, Yoan, Yochanan, Yohanes, Yuhanna, Zuan, Žan. Nweta Jackin na ndị ọzọ asụsụ.
Kasị nkịtị aha na aha ikpeazụ Downey: Jay, Robert, Truman, Jessie, Mary, Róbert. Nweta Aha na-aga na Downey.
Ndakọrịta nke Jackin na Downey bụ 85%. Nweta Ndakọrịta nke Jackin na Downey.