William Barclay Squire
William Barclay Squire ( 16 October 1855 – 13 January 1927 ) was a British musicologist , librarian and librettist . 
<triplet> William Barclay Squire <subj> 16 October 1855 <obj> date of birth <subj> 13 January 1927 <obj> date of death