The daughters of both TED KENNEDY and WALTER MONDALE have both died suddenly at 51, The ENQUIRER has learned.
KARA KENNEDY, 51,  the eldest child of Sen. TED KENNEDY and first wife JOAN has died at a Washington, DC area health club.
Kara Kennedy had battled lung cancer and in 2003 docs had removed a malignant tumor. Her brother Former Rep. Patrick Kennedy confirmed the death saying her rigorous cancer treatment "took quite a toll on her and weakened her physically."
Kara was born to Ted and Joan during his brother John F. Kennedy’s historic 1960 Presidential run.
She and her brother Edward Kennedy Jr. helped run their dad's U.S. Senate campaign in 1988.
Before Teddy’s death in 2009 she accepted the Presidential Medal of Freedom presented to Ted by Barack Obama.
"Her heart gave out," Patrick told media.
AND in another heartbreaker rocking the Beltway today, ELEANOR MONDALE, the daughter of former Vice President Walter Mondale died at her home in Minnesota – also at 51.
Eleanor, a former wild child, who carved out her own career as a headline making entertainment reporter and radio show host, had been diagnosed with brain cancer years earlier.
Mondale, the middle of three children born to Walter and Joan Mondale, campaigned for her dad during his campaign to unseat President Ronald Reagan in 1984.
Eleanor began her career as a budding thesp with small parts on "Three's Company" and "Dynasty" before covering the entertainment world on both local TV and radio and nationally  — at E! , ESPN and CBS News.
During a camping trip in 2005, Mondale was diagnosed with brain cancer after she suffered two seizures.  Eleanor underwent chemotherapy and radiation treatments and returned to work for but sadly her cancer returned in 2008.
R.I.P. Kara & Eleanor.