Complex sentence: She is nowadays chiefly remembered as a major patron of Charles Rennie Mackintosh and Margaret MacDonald in Glasgow, Scotland, but the name of "Miss Cranston's Tea Rooms" lives on in reminiscences of Glasgow in its heyday.
Split into simpler sentences: She is nowadays chiefly remembered as a major patron of Charles Rennie Mackintosh and Margaret MacDonald, in Glasgow, Scotland. The name of "Miss Cranston's Tea Rooms" lives on in reminiscences of Glasgow in its heyday.