Iain uiga igoa sili: Faauo, Gauai, Volatile, Laki, Fiafia. Aumai Iain uiga o le suafa.
Leo uiga faaiu sili: Po nei, Agalelei, Gauai, Volatile, Faauo. Aumai Leo uiga o faaiu.
Iain amataga o le igoa muamua. Scottish form of John. Aumai Iain amataga o le igoa muamua.
Faʻaiu Leo taatele i Islands Faroe, Papua Niu Kini, Le Au Paia o Helena, Afio Aʻe ma Tris, Vanuatu. Aumai Leo faaiu faasalalauina.
Igoa tutusa mo Iain i atunuu ma gagana eseese: 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, 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, 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, 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. Aumai Iain i isi gagana.
Surnames taatele ma igoa Iain: Girdwood, Ogilvy, Macdonald, Banda, Macmillan. Aumai Lisi o surnames ma igoa Iain.
O le tele o igoa tutusa ai ma faaiu Leo: Leonardo, Leo, Lip Wee, Rakendu, Janine, Léo. Aumai Igoa e aumai faatasi Leo.
Ogatasi o Iain ma Leo o 76%. Aumai Ogatasi o Iain ma Leo.