I believe these are the twins Joe II attempted to incinerate some years back.
yes—Joe Kennedy III’s twin brother
Boston Globe 7/22/97:
>>One of the twin sons of US Representative Joseph P. Kennedy II suffered a second-degree burn Saturday after he joined his father in setting off fireworks on the beach outside the family’s Hyannisport compound.
The premature explosion of a “spark emitting firework” resulted in Matthew Kennedy suffering the burn to his left forearm. The 16-year-old was treated and released from Cape Cod Hospital, Kennedy spokesman Brian O’Connor said.
Aides said the congressman is aware that fireworks are illegal in Massachusetts, although a statement released by Kennedy did not refer to the potential legal liability. “I take responsibility for it,” the congressman said in a written statement …