People Spain Ildefonso Sierra y Orantes peoplepill id: ildefonso-sierra-y-orantesISYO 2 views today 17 views this weekSpanish engineerIldefonso Sierra y OrantesBiographyListsAlso ViewedListsIldefonso Sierra y Orantes is in following listsBy field of workNotable Spanish engineersGender:Male, Born in:Years 1800 to 1849By work and/or countryNotable Spanish EngineersGender:Male, Born in:Years 1800 to 1849From our partnersSponsoredIldefonso Sierra y Orantes