He was born in Boston, Mass and was a
descendent of John Howland.
He started working at 15 when he served
as an apprentice for a merchant house in New London, Connecticut in
1759. He took part in public affairs at the beginning of the American
Revolution. He was a member of the Massachusetts General Court from
1771-1775. He was also a delegate to the provincial congress from
1774-1775. He was also a member of the Board of War from 1778 until
it dissolution in 1781
In 1779 he served in the state
constitutional convention. He was also a delegate to the continental
congress from from 1782-1783 and then from 1785-1787. He served as
it's president for five months from June 6 to November 5th
of 1786 after John Hancock resigned. He also served a term as a judge
at the Middlesex County Massachusetts Court of Common Pleas.
For several months in 1787, he served
as one of the Massachusetts delegates to the United States
Constitutional Convention where he frequently served as chairman of
the convention. He presided over the sessions during the delegates
first deliberations on the structure of the new government in late
May and June of that year. After the convention he worked hard to see
that the constitution was approved in his home state.