Daisy Peterson Sweeney
Daisy Elitha Sweeney (née Peterson), teacher, pianist, organist (born 7 May 1920 in Montréal, QC; died 11 August 2017 in Montréal). An accomplished musician in her own right, Daisy Peterson Sweeney is perhaps best known as the older sister, and early teacher, of celebrated jazz pianist Oscar Peterson. She also taught other notable Montréal jazz pianists, including Oliver Jones and Joe Sealey.