Who are Michael Jackson's grandparents?

Paternal Grandparents: Samuel Jackson (born 1893, died February 12 1992) and Chrystal Jackson (born 1900, died November 3, 1992)

Maternal Grandparents: Prince Albert Scruse (born November 16 1907, died January 22, 1997) and Martha Bridges (born December 2 1907, died April 25, 1990)