Ulrich died without heirs in 1603 and Güstrow fell back to John Albert's grandchildren Adolf Frederick I and John Albert II, joint rulers of Mecklenburg-Schwerin from 1610 onwards.
The passing of Ulrich without direct descendants in 1603 caused Güstrow to revert to the line of John Albert's descendants, specifically his great-grandsons Adolf Frederick I and John Albert II, who took over joint rule of Mecklenburg-Schwerin from 1610.