To my knowledge he either died of old age, or alcohol poisoning. To your second question, He died at the age of 81, on October 2, 1803. This is the reason why there's Samuel Adam's Beer! Hope this helps!
Samuel A. Adams died in 1988.
Samuel Adams Holyoke died in 1820.
Samuel Adams Wiggin died in 1899.
Samuel S. Adams died in 2006.
Samuel Adams died from nature death. Meaning he died from age.
Samuel Adams - governor - died on 1850-02-27.
Samuel Hunter Adams died on 1975-12-10.
Mother died in 1749_ She was Mary Adams Father died in 1748_ He was Deacon Samuel Adams
Samuel Adams - naval officer - died on 1942-06-06.
Boston
starvation
he died october 2, 1803