Please answer the following question: What key details about sarah churchill , duchess of marlborough can be extracted from the following bio? Bio: sarah churchill -lrb- '' nee '' jenyns , spelt jennings in most modern references -rrb- , duchess of marlborough -lrb- 5 june 1660 -lrb- old style -rrb- -- 18 october 1744 -rrb- rose to be one of the most influential women of her time through her close friendship with queen anne of great britain . sarah 's friendship and influence with princess anne was widely known , and leading public figures often turned their attentions to her in the hope that she would influence anne to comply with requests . as a result , by the time anne became queen , sarah 's knowledge of government , and intimacy with the queen , had made her a powerful friend and a dangerous enemy . sarah enjoyed a '' long and devoted '' relationship with her husband of more than 40 years , john churchill , 1st duke of marlborough . she acted as anne 's agent after anne 's father , james ii , was deposed during the glorious revolution ; and she promoted her interests during the rule of james 's successors , william iii and mary ii . when anne came to the throne after william 's death in 1702 , the duke of marlborough , together with sidney godolphin , the first earl of godolphin , rose to head the government , partly owing to his wife 's friendship with the queen . while the duke was out of the country commanding troops in the war of the spanish succession , sarah kept him informed of court intrigue , while he sent her requests and political advice , which she would then convey to the queen . sarah tirelessly campaigned on behalf of the whigs , while also devoting much of her time to building projects such as blenheim palace . she died in 1744 at the age of eighty-four . a strong-willed woman who liked to get her own way , sarah tried the queen 's patience whenever she disagreed with her on political , court or church appointments . after her final break with anne in 1711 , sarah and her husband were dismissed from the court , but she returned to favour under the hanoverians following anne 's death . she had famous subsequent disagreements with...
A:
- death date is 18 october 1744 -lrb- aged 84 -rrb-- spouse is john churchill , 1st duke of marlborough- children is harriet anne spencer , countess of sunderland john churchill , marquess churchill of blandford elizabeth egerton , countess of bridgewater mary montagu henrietta , duchess of montagu charles churchill godolphin , 2nd duchess of marlborough- birth date is 5 june 1660- parents is richard jennings frances thornhurst