Police in Portsmouth, N.H., said a man kicked open the door and broke items inside a house that belonged to a signer of the Declaration of Independence. The burglar alarm sounded about 1 a.m. Monday at the Moffatt-Ladd House. Police later arrested Thistleton Robertson IV, 23, charging him with one count of burglary. During his arraignment, Robertson said he was intoxicated and broke into the house because he was running away from two people. He said he is an engineer for New York’s Department of Environmental Protection and was visiting his girlfriend in Kittery, Maine. The Moffatt-Ladd House, a Georgian mansion built in 1763, was the home of merchant William Whipple, one of the three New Hampshire signers of the Declaration.