Mid 19th century; earliest use found in Joseph Romilly (1791–1864), university administrator. From the name of John Henry Newman + -ia, punning on mania.
Definition of Newmania in US English:
Newmania
nounnjuːˈmeɪnɪə
Christian Church depreciative, historical
Enthusiastic support for Newmanism.
Origin
Mid 19th century; earliest use found in Joseph Romilly (1791–1864), university administrator. From the name of John Henry Newman + -ia, punning on mania.