The Counts of Brandis took over some of the paintings along with Maribor Castle. The long-term owners before them were the Counts Khisl, who leased or owned the castle from 1571 to 1727. After 1620, the hereditary owner of Maribor Castle was Janez Jakob Khisl (John Jacob Khisl), who rebuilt the administrative court of the sovereign Prince.

In addition to the aforementioned depictions of the two castles, the museum has also preserved a painting of Count John Jacob Khisl on the catafalque. The count died on the 23rd of June 1637 at the age of 73. The painting first hung in the church of Our Lady of Mercy and Grace in the former Capuchin monastery in Maribor, and later in the Loreto chapel of the castle. The museum's collection also holds a depiction of Maribor Castle from around 1683, showing the building after the renovation works (1667-1682).

In the inventory log written at the time of death of John Jacob II. Khisl in 1690, the furnishings of the Loreto chapel (consecrated in 1661) are listed. The list included not only liturgical items, but also votive offerings (necklaces, belts, pendants) and votive paintings. Seventeen votive paintings survived, dating from 1661 to 1732. They are linked to religion and, although they are of a lesser quality, they were on public display. The Loreto Chapel of the castle became very popular among the townspeople soon after its construction in 1655.