Conrad II ( c. 990 â `` June 4 , 1039 ) was the son of Count Henry of Speyer and Adelheid of Alsace . He was elected king in 1024 and crowned emperor of the Holy Roman Empire on March 26 , 1027 , the first emperor of the Salian Dynasty . Conrad II ( c. 990 -- June 4 , 1039 ) was Holy Roman Emperor from 1027 until his death .