Siwan uiga igoa sili: Agalelei, Toaga, Fiafia, Faauo, Lē ma vāloia. Aumai Siwan uiga o le suafa.
Paar uiga faaiu sili: Toaga, Fiafia, Agavaa, Gauai, Laki. Aumai Paar uiga o faaiu.
Siwan amataga o le igoa muamua. Welsh form of Joan. Aumai Siwan amataga o le igoa muamua.
Igoa tutusa mo Siwan i atunuu ma gagana eseese: Asia, Chevonne, Gia, Gianna, Giannina, Giovanna, Giovannetta, Hanna, Hanne, Hannele, Hannie, Ioana, Ioanna, Iohanna, Ivana, Jana, Jane, Janessa, Janice, Janina, Janna, Janne, Jannicke, Jannike, Jean, Jeanne, Jehanne, Jennigje, Jo, Joan, Joana, Joanie, Joaninha, Joann, Joanna, Joanne, Joasia, Joetta, Joey, Johana, Johanna, Johanne, Johanneke, Johnna, Jojo, Joleen, Jolene, Jone, Jonelle, Jonette, Joni, Jonie, Jonna, Jóhanna, Jóna, Jovana, Juana, Juanita, Nana, Seona, Seonag, Seònaid, Shauna, Shavonne, Shawna, Sheona, Shevaun, Shevon, Shona, Sìne, Síne, Siobhán, Tajuana, Vanna, Xoana, Yana, Yanka, Yanna, Yoana, Zhanna, Žana. Aumai Siwan i isi gagana.
O le tele o igoa tutusa ai ma faaiu Paar: Adina, Zetta, Verla, Carlota, Ian. Aumai Igoa e aumai faatasi Paar.
Ogatasi o Siwan ma Paar o 76%. Aumai Ogatasi o Siwan ma Paar.