Siwan kacha mma aha pụtara: Emesapụ aka, Ifịk, Eji obi ụtọ, Enyi na enyi, Iwe. Nweta Siwan pụtara aha.
Schipper kacha mma aha nna pụtara: Kechioma, Eru, Oge a, Emesapụ aka, Obodo. Nweta Schipper pụtara aha nna.
Siwan si malite aha mbụ. Welsh form of Joan. Nweta Siwan si malite aha mbụ.
Aha ikpeazụ Schipper kasị nkịtị na Netherlands. Nweta Schipper aha nna na-agbasa.
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 Schipper: Manuel, Ike, Xavier, Joellyn, Kena. Nweta Aha na-aga na Schipper.
Ndakọrịta nke Siwan na Schipper bụ 68%. Nweta Ndakọrịta nke Siwan na Schipper.