Siani ystyron enw gorau: Gyfeillgar, Lwcus, Creadigol, Anwadal, Anweddol. Cael Siani ystyr enw.
Siani tarddiad enw cyntaf. Diminutive of Siân. Cael Siani tarddiad enw cyntaf.
Enwau cyfystyr ar gyfer Siani mewn gwahanol wledydd ac ieithoedd: Chevonne, Genette, Gianna, Giovanna, Ioana, Ioanna, Iohanna, Ivana, Jana, Janae, Jane, Janeka, Janel, Janele, Janella, Janelle, Janene, Janessa, Janet, Janetta, Janette, Janey, Janice, Janie, Janina, Janine, Janis, Janna, Jannette, Jannine, Jan, Jayna, Jayne, Jaynie, Jeana, Jeane, Jeanette, Jeanie, Jeanine, Jean, Jeanna, Jeanne, Jeannette, Jeannie, Jeannine, Jehanne, Jeni, Jenna, Jenni, Jennie, Jenny, Jenný, Jessie, Joan, Joana, Joanna, Johana, Johanna, Johanne, Johnna, Jone, Jóhanna, Jóna, Jovana, Juana, Lashawn, Nettie, Shauna, Shavonne, Shawna, Sheena, Sheenagh, Shena, Shevaun, Shevon, Sìne, Síne, Sinéad, Sìneag, Siobhán, Teasag, Xoana, Yana, Yanka, Yanna, Yoana, Zhanna, Zhannochka, Zsanett. Cael Siani mewn ieithoedd eraill.
Mae'r rhan fwyaf o'r enwau cyffredin gyda cyfenw Pleasanton: Quincy, Chase, Jamal, Janina. Cael Enwau sy'n mynd gyda Pleasanton.