The name of James William Windsor (1779–1853) is not widely known in scholarly circles today; yet as a pianist, organist and all-round music director, he was instrumental in guiding the musical world of Bath through a turbulent period of economic decline and societal change over the course of a career that spanned nearly six decades. Much of what may be discovered about his activities is gleaned from his large and important music collection, bequeathed to the Royal College of Music (RCM) in 1890 by his eldest daughter, Elizabeth (1805–1890). This collection of printed and manuscript music reveals much about its former owner's interests, activities and friendships, and many of its most significant items lend value to modern editions and musicological research. Of particular relevance to this study is Windsor's own transcription of Bach's Das wohltemperirte Clavier (RCM MS 743, dated 1801), identified by Yo Tomita as being both textually unique and the second earliest known complete English source of this work.
