Is it ensure, insure, or assure?
masc. proper name, Middle English Rycharde, from Old French Richard, from Old High German Ricohard "strong in rule," from Proto-Germanic *rik- "ruler" (see rich) + *harthu "hard," from PIE *kar-o- (see hard). "One of the most popular names introduced by the Normans. Usually Latinized as Ricardus, the common form was Ricard, whence the pet form Rick, etc." ["Dictionary of English Surnames"]
Richards Rich·ards (rĭch'ərdz), Dickinson Woodruff. 1895-1973.
American physician. He shared a 1956 Nobel Prize for developing cardiac catheterization.