With the death of her husband Peter II in August 1342, Elizabeth lost the influence over the political management of the Kingdom of Sicily. At Elizabeth's insistence, however, Louis, her four-year-old son, was crowned King of Sicily, ensuring his rightful place on the throne. Peter II's brother, Duke John, acted as regent for the first six years of the young king's reign. During this time, Elizabeth kept a power balance with her brother-in-law. When Duke John died of plague in 1348, Elizabeth became the regent for ten-year-old Louis. Elizabeth's regency lasted from 1348, until her death. Her daughter Constance took over as regent for Louis.