John Frost (brother of William of Oyster Bay, Long Island), was living in Southold, L. I., in 1655-6, and probably on his return to New Haven, Conn., stopped at Killingsworth (Oyster Bay), for in 1672 he buys land there of Robert Williams, and his wife signs as Abigail Frost. In 1679 he also buys land there in Oyster Bay Cove, opposite Thomas Young's. Just when he crossed over to New Haven has not been ascertained, nor do we know how large a family he had but we find his son John marrying in that place in 1665.