Siwan kacha mma aha pụtara: Emesapụ aka, Ifịk, Eji obi ụtọ, Enyi na enyi, Iwe. Nweta Siwan pụtara aha.
Jansen kacha mma aha nna pụtara: Kechioma, Ifịk, Oge a, Okike, Oké njọ. Nweta Jansen pụtara aha nna.
Siwan si malite aha mbụ. Welsh form of Joan. Nweta Siwan si malite aha mbụ.
Jansen si. Means "son of JAN (1)". Nweta Jansen si.
Aha ikpeazụ Jansen kasị nkịtị na Belgium, Germany, Namibia, Netherlands, South Africa. Nweta Jansen 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.
Agakọta surnames maka Jansen na mba dị iche iche na-asụ asụsụ: Bevan, Evans, Giannino, Giannopoulos, Hancock, Hansen, Hanson, Hansson, Hovanesian, Ioannidis, Ionesco, Ionescu, Ivankov, Ivanov, Ivanović, Janiček, Jankovic, Janković, Jankovič, Jans, Janson, Jansson, Janz, Johansen, Johansson, Johnson, Jones, Jóhannsson, Jovanović, Mallon, Malone, Mollown, Nana, Nani, Nanni, Nannini, Ó maoil eoin, Yanev, Zanetti, Zunino. Nweta Jansen na ndị ọzọ asụsụ.
Kasị nkịtị aha na aha ikpeazụ Jansen: Terri-ann, Michael, Berry, Zodia, Marie-louise, Marie-Louise, Michaël. Nweta Aha na-aga na Jansen.
Ndakọrịta nke Siwan na Jansen bụ 75%. Nweta Ndakọrịta nke Siwan na Jansen.