While in Munich, Kerll married Anna Catharina Egermayer in 1657. The couple had eight children, but only one of them, the youngest son, pursued a career in music. The Munich years were especially important for Kerll: he was apparently favoured by Ferdinand Maria, who would provide support for the rest of Kerll's life; in 1664 he was ennobled by the emperor; in 1669 his first published works appeared: "Delectus sacrarum cantionum", a collection of vocal music, and a "Missa pro defunctis", both dedicated to Ferdinand Maria. Kerll gave up his post in Munich in 1673 for unclear reasons - it is believed that there was a particularly serious quarrel with other court musicians (Italian singers) which made him leave. Kerll did, however, maintain contact with Elector Ferdinand Maria until his death.