ultramontane

a Roman Catholic who advocates ultramontanism (supreme papal authority in matters of faith and discipline)

of or relating to ultramontanism

on or relating to or characteristic of the region or peoples beyond the Alps from Italy (or north of the Alps); "ancient transalpine Gaul was an area northwest of the Alps and included modern France and Belgium"; "Cracow was a transalpine university"

on the Italian or Roman side of the Alps; "ancient cisalpine Gaul included an area south and east of the Alps"