Task: Question Understanding
Input (English): Context : Isabel Weld Perkins (March 3, 1876 -- November 3, 1948), mostly known as Isabel Anderson or Mrs. Larz Anderson after her marriage, was a Boston-area heiress and author who left a legacy to the public that includes a park and two museums. 
Question : What is Isabel Weld Perkins's spouse's name?
Output (English): spouse