See also the related category english.
Siward is not widely used as a baby name for boys. It is not in the top 1000 names.
Baby names that sound like Siward include Siwerd, Saeweard, Sarad, Sardae, Sarday, Sardaye, Sarid (Hebrew), Sartaj, Searathe, Seaward, Seeward, Seigurd, Serhat (Kurdish and Turkish), Seward (English), Seyward, Sharad, Sharod, Sharwood, Sharyd, and Sherard.
† approx English pronunciation for Siward: S as in "see (S.IY)" ; IH as in "it (IH.T)" ; W as in "we (W.IY)" ; ER as in "hurt (HH.ER.T)" ; D as in "day (D.EY)"