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.
Ulrich passed away without direct descendants in 1603, and Güstrow reverted to John Albert's great-grandchildren Adolf Frederick I and John Albert II, who jointly ruled Mecklenburg-Schwerin from 1610 onwards.