Christian was the father of Thomas, Severin (Soren), Kristen, Bertel, and possibly Niels Mule.
He appeared to have close ties to the Governor-general of Norway, Christen Munk, and was appointed mayor of Oslo by him in 1567.
The highlight in this respect was undoubtedly when the retired mayor hosted on 23 November 1589 the wedding of Christian IV's sister Anne of Denmark and James of Scotland.
The favors that Mule received were largely motivated by his work during the siege of Akershus in 1567 during the Nordic Seven Years' War.
A few years later he asked the King for favor for his four sons, in the form of duty-free import of 6.4 lester Rostockerøl for each man.