Joan Parker, the widow of the late author Robert B. Parker, died on Tuesday, June 11, according to Helen Brann, a long time friend and agent. Dina Rudick/Globe Staff
Joan Parker, the philanthropist and widow of mystery writer Robert B. Parker, has died. Parker, a longtime Cambridge resident, died Tuesday, according to Helen Brann, a longtime friend and agent to Robert B. Parker. Joan Parker had been diagnosed with inoperable lung cancer in August 2011, and was receiving treatment. A tireless fundraiser for a host of different charities, Parker was barely slowed by her illness. Last month, she co-chaired the annual fund-raiser of PFLAG, a national nonprofit supporting parents, families, and friends of lesbians and gays. (Parkerâ™s two children, Dan and David, are both gay.) Robert B. Parker, best known for his âœSpenserâ detective novels, died in 2010.





