Oscar-winning folk singer Buffy Sainte-Marie has been stripped of an honorary degree as the fallout over her disputed Native American ancestry claims keeps growing.  The University of Toronto announced Wednesday it has rescinded the singer-songwriter’s honorary Doctor of Laws degree, which she received in 2019 for her work in music, the arts and social advocacy. A university spokesperson said the move followed a confidential review process that ended with approval from the school’s governing council. Buffy Sainte-Marie receives an honorary Doctor of Laws degree from Dalhousie University on April 17, 2018. Alamy Stock Photo The decision comes two and a half years after CBC’s “The Fifth Estate” published an investigation into Sainte-Marie’s Indigenous identity claims in October 2023. The report cited a birth certificate showing Sainte-Marie was born in Massachusetts to Italian-American parents, contradicting decades of biographies and press coverage describing her as Algonquin, Mi’kmaw and later Cree.…