Patricia A. Disney, former wife of the late Roy E. Disney, died Friday from Alzheimer’s disease. She was 77.Patricia Disney was vice chairman of Shamrock Holdings, the investment company for the Roy E. Disney family. She was involved with the activities of her late husband, the former chairman of Shamrock Holdings and former vice chairman of the Walt Disney Co. In a statement, Disney prexy-CEO Robert Iger said: “Her passing marks a sad milestone for the Disney family, and we will always remember her irrepressible spirit and dedication to our company. Patty was known for her kindness, outgoing nature and especially for her philanthropy and will be missed by all who knew her.” She was born in New Orleans, moved to Southern California as a young child and attended the U. of Colorado. Before her marriage to Roy Disney in 1955, she lived in New York and worked in advertising. Patricia Disney was a former regent of St. Mary’s College in Moraga, Calif., a past member of the board of the Peregrine Fund in Boise, Idaho, and a former trustee of Occidental College. She is survived by four children, Roy Patrick Disney, Susan Disney Lord, Abigail Disney and Timothy Disney, plus 17 grandchildren. Funeral services will be private. Gifts may be made to the Alzheimer’s Assn., Southern California Chapter, or the Roy and Patricia Disney Family Cancer Center, Providence Saint Joseph Foundation.