ultramontane

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"

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