Siwan eng yaxshi nom ma'nolari: Saxiy, Faol, Quvnoq, Do'st, Temperaturali. Qabul qiling Siwan ismining ma'nosi.
Davidson eng yaxshi familiyasi ma'nolari: Do'st, Uchuvchi, Zamonaviy, Omadli, Temperaturali. Qabul qiling Familiyasi Davidson.
Siwan ismining kelib chiqishi. Welsh form of Joan. Qabul qiling Siwan ismining kelib chiqishi.
Davidson kelib chiqishi. Means "son of David". Qabul qiling Davidson kelib chiqishi.
Eng ko'p ishlatiladigan Davidson familiyasi Avstraliya, Kanada, Yamayka, Yangi Zelandiya, Birlashgan Qirollik. Qabul qiling Davidson familiyasi tarqalishi.
Boshqa mamlakatlar va tillarda, Siwan uchun alohida ismlar: 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. Qabul qiling Siwan boshqa tillarda.
Turli mamlakatlarda va tillarda Davidson uchun ham xuddi shu kabi familiyalar: David, Davidović, Davidsen, Davis, Mac daibhéid, Mcdevitt. Qabul qiling Boshqa tillarda Davidson.
Davidson ismiga ega bo'lgan eng keng tarqalgan ismlar: Minnika, Douglas John, Jess, Edward, Roy. Qabul qiling Davidson bilan ketadigan ismlar.
Siwan va Davidson ning mosligi 68%. Qabul qiling Siwan va Davidson muvofiqligi.