Siwan kacha mma aha pụtara: Emesapụ aka, Ifịk, Eji obi ụtọ, Enyi na enyi, Iwe. Nweta Siwan pụtara aha.
Eis kacha mma aha nna pụtara: Ifịk, Oge a, Eru, Enyịn, Oké njọ. Nweta Eis pụtara aha nna.
Siwan si malite aha mbụ. Welsh form of Joan. Nweta Siwan si malite aha mbụ.
Agakọta aha maka Siwan na mba dị iche iche na-asụ asụsụ: 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. Nweta Siwan na ndị ọzọ asụsụ.
Kasị nkịtị aha na aha ikpeazụ Eis: Dannette, Desmond, Fatima, Julissa, Landon, Fátima. Nweta Aha na-aga na Eis.
Ndakọrịta nke Siwan na Eis bụ 81%. Nweta Ndakọrịta nke Siwan na Eis.