Siwan incazelo engcono kakhulu yegama: Unika, Esebenzayo, Ujabule, Nobungane, Isimo sengqondo. Thola Siwan kusho igama.
Gerlach izincazelo zegama elihle kakhulu: Nobungane, Unika, Ukudala, Isimanje, Okungafani. Thola Gerlach incazelo yesibongo.
Siwan imvelaphi yegama lokuqala. Welsh form of Joan. Thola Siwan imvelaphi yegama lokuqala.
Igama lokugcina Gerlach elivame kakhulu EJalimane. Thola Gerlach ukusakazwa kwesibongo.
Amagama afanayo for Siwan emazweni ahlukene nezilimi ezahlukene: 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. Thola Siwan kwezinye izilimi.
Amagama avame kakhulu ngegama lomsebenzisi Gerlach: Camille, Kerstin, Karen, Gianna. Thola Amagama ahamba ne- Gerlach.
Ukuhambisana kwe- Siwan kanye Gerlach kuyinto 83%. Thola Ukuhambisana kwe- Siwan kanye Gerlach.