Siwan an t-ainm as fheàrr a chiall: Fialaidh, Gnìomhach, Sunndach, Càirdeil, Temperamental. Faigh Siwan brìgh ainm.
Siwan a thàinig a 'chiad ainm. Welsh form of Joan. Faigh Siwan a thàinig a 'chiad ainm.
Samhlachadh ainmean Siwan ann an diofar dhùthchannan agus cànanan: 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. Faigh Siwan ann an cànanan eile.
As ainmean cumanta le ainm mu dheireadh Studmire: Josiah, Sebastian, Malcolm, Dona, Jose, José, Sebastián. Faigh Ainmean a 'dol le Studmire.