to the local saying "Cymru, Lloegr a Llanrwst" (Wales, England and Llanrwst). The saying was used as the title of a 1989 song by local band, Y Cyrff.

The parish was also contested between different ecclesiastical jurisdictions; whilst the Conwy was generally the boundary between the dioceses of Bangor and St Asaph, the parish of Llanrwst straddled the river. In 1276, Llywelyn ap Gruffudd,