Constance (2 November 1154 – 27 November 1198) was the heiress of the Norman kings of Sicily and the wife of Henry VI, Holy Roman Emperor. She was Queen of Sicily in 1194-1198, jointly with her husband from 1194 to 1197, and with her infant son Frederick II, Holy Roman Emperor, in 1198.
Henry VI (November 1165 – 28 September 1197) was King of Germany from 1190 to 1197, Holy Roman Emperor from 1191 to 1197 and King of Sicily from 1194 to 1197. In 1197 the tyrannical power of the foreign King in Italy spurred a revolt, especially in southern Sicily, which his German soldiers suppressed mercilessly. In the same year Henry prepared for a Crusade, but, on 28 September, he died of malaria in Messina, although it is also widely believed that he was poisoned.
His son Frederick II was to inherit both the Kingdom of Sicily and the Imperial crown.