Complex sentence: What became a "favourite feature" for Austin and Paley were carved inscriptions, usually black, sometimes in Latin and sometimes in English; examples can be in St John, Crawshawbooth, and Christ Church, Waterloo (both in Merseyside).
Split into simpler sentences: What became a "favourite feature" for Austin and Paley were carved inscriptions, usually black, sometimes in Latin and sometimes in English. These can be found, for example in St John, Crawshawbooth, and Christ Church, Waterloo (both in Merseyside).