does "Kennedy of Massachusetts" mean "Ted Kennedy?"
In the half-century since he had come to the Senate as a nine-year-old page boy Riedel had never before committed the breach of running out on the Senate floor. Now he raced up to Senator after Senator, spluttering, "The President has been shot—the President—he's been shot!" Holland of Florida gaped at him, Dirksen of Illinois, sagged. His face empty, Riedel looked up to the rostrum for help and saw Kennedy of Massachusetts. In a cloakroom the strained rumors had just reached the Majority Leader, Mike Mansfield. Mike remembered that Ted had been presiding when Patrick Kennedy died, and he moved toward the chair. Riedel beat him there. On the dais he began, "The most horrible thing has happened! It's terrible, terrible!''

Question

Answer

Certainly. 
”Kennedy of Massachusetts‘ is another way to call "Edward Moore "Ted" Kennedy".  We sometimes use the place special to this person instead of his full name.  For example if you are in a university of USA, and your English name is Mayllt, but there still are other people called "Mayllt", and just in order to know which Mayllt we are talking about, we may use the country together with the name, such as Mayllt of China. 
Plus, we can use the "Profession" with "Name". For instance, Andy of Tennis.
By doing this in a newspaper, you can see the avaries to describe one person.

لا تفوّت فرصة تعلّم لغة جديدة وأنت مرتاح في منزلك. تصفّح مجموعتنا المختارة من مدرّسي اللغات ذوي الخبرة وسجّل في درسك الأول الآن!