This Thursday marks what would have been the 100th birthday of Rosemary Kennedy, the eldest daughter of Joseph P. Kennedy and his wife, Rose. For many years, the story of JFK’s sister, who had an undiagnosed mental disability and was lobotomized at age 23, was shrouded in mystery. A vivacious young woman with a sweet disposition, Rosemary’s life was dramatically altered when her father decided to have her undergo a pre-frontal lobotomy in November 1941, a procedure that left her with the mental capacities of a toddler and requiring round-the-clock care