c. 1300, "fact of appearing to view," from Old French semblance, from semblant "likeness, appearance," present participle of sembler "to seem, appear," from Latin simulare "to resemble, imitate," from similis "like, resembling, of the same kind" (see similar). Meaning "person's appearance or demeanor" is attested from c. 1400; that of "false, assumed or deceiving appearance" is from 1590s. Meaning "person or thing that resembles another" is attested from 1510s.
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Harper, D. (n.d.). Etymology of semblable. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/semblable