archpatron
/ˈɑːrkiːˈpeɪtrɒn/Definitions
1. noun
A titular or honorary title of an archbishop, or a chief patron or supporter.
“The archpatron of the local church was a wealthy businessman who donated generously to its restoration.”
2. noun
A person who serves as a chief patron or supporter of an institution or activity.
“The university’s archpatron is a renowned philanthropist who has funded numerous research projects.”