Jowan maana ya jina bora: Bahati, Ubunifu, Kisasa, Kirafiki, Temperament. Pata Jowan maana ya jina.
Havenga maana ya jina la juu: Kisasa, Wenye uwezo, Makini, Tete, Kirafiki. Pata Havenga 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 Havenga la kawaida zaidi . Pata Havenga 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 Havenga: Consuela, Norberto, Barend Petrud, Pieter, Johann, Jóhann. Pata Majina yanayotembea na Havenga.
Utangamano wa Jowan na Havenga ni 76%. Pata Utangamano wa Jowan na Havenga.