Complex sentence: Princess Michael of Kent was born on 15 January 1945, in Karlsbad, a town then in German-populated Sudetenland and now known as Karlovy Vary in the Czech Republic.
Split into simpler sentences: Princess Michael of Kent was born on 15 January 1945, in Karlsbad. The town was in the then-German-populated Sudetenland, now known as Karlovy Vary, Czech Republic.