Mattituck was part of the Township of Southold in Suffolk County near the east end of Long Island. It was established by Charter to the New Haven Colony of Connecticut in 1658. By it's location on the Long Island Sound across from Connecticut it's leanings would have been Whig - 

"Those who remained on the Island were compelled to swear allegiance to King George. Some did this with good grace, and some of necessity. To none was it so distasteful as we are disposed to imagine. The men of that day had all the inveterate respect and affection for the sovereign that British have today. The revolution began in protest against injustice, but with loyalty to the king unimpaired, and with no thought of ultimate separation. Washington, when he took command of the continental army, desired to right the wrongs of the colonies but "abhorred the idea of independence." Thomas Jefferson was of the same mind. Reasonable concessions and conciliatory spirit on the part of the king would have ended the struggle before it was well begun. Loyal subjects who asked for nothing but redress of grievances were treated as rebels, stern and unjust oppression followed, and eventually the sovereign whom they loved was become the tyrant whom they hated. Before things had gone to such lengths the people of Long Island were forced to make their decision, for the British forces were in absolute possession. Some of the best and most honorable men of the Island were thoroughly loyal to the British Crown and were afterwards despised as Tories, and suffered the confiscation of their estates. Some were on fire with colonial patriotism and could do nothing but flee to parts not occupied by British troops. Most were undecided, as most of the men of that time in any of the colonies would have been under similar circumstances, and let necessity shape their course. Their homes, their lands, their flocks and herds, all their wealth, present and prospective, were on the Island, and the Island was wholly in the hands of the army of King George. To flee was to leave all and go out empty-handed. For the aged, the sick, those encumbered with dependent families, flight was impossible. The few who had ready money might flee with some hope, young men or unattached men might flee, but the majority had no choice but to remain and give up their arms and take the oath of allegiance. Many who had fought in the disastrous Battle of Long Island had nothing for it, when once the invaders were established in the Island, but to return to their homes and families and submit to the inevitable. There were no other people in all the bounds of the colonies so helpless as the Long Islanders, utterly cut off from their fellow Americans. And there were no people of the colonies who suffered more." - "A History of Mattituck, Long Island, N.Y.", Rev. Charles E. Craven, 1906