Jowan maana ya jina bora: Bahati, Ubunifu, Kisasa, Kirafiki, Temperament. Pata Jowan maana ya jina.
Decker maana ya jina la juu: Kisasa, Furaha, Ukarimu, Wenye uwezo, Kazi. Pata Decker maana ya jina la jina.
Jowan asili ya jina la kwanza. Aina ya Cornish John. Pata Jowan asili ya jina la kwanza.
Jina la mwisho Decker la kawaida zaidi Luxemburg. Pata Decker kutangaza jina la jina.
Majina ya jina la Jowan katika nchi tofauti na lugha tofauti: 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, Jackin, Jake, 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, Juan, Juanito, Juha, Juhán, Juhan, Juhana, Juhani, Juho, Jukka, Jussi, Keoni, Keshaun, Keshawn, Nelu, Nino, Ohannes, Rashaun, Rashawn, Seán, Sean, 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. Pata Jowan kwa lugha zingine.
Majina ya kawaida yenye jina la mwisho Decker: Scott, Taylor, Ariel, David, Carrie, Dávid. Pata Majina yanayotembea na Decker.
Utangamano wa Jowan na Decker ni 76%. Pata Utangamano wa Jowan na Decker.