Through the fall and winter, Fort Saybrook was effectively besieged. Any who ventured outside were killed. As spring arrived in 1637, the Pequot stepped up their raids on Connecticut Colony towns. On April 23, Wongunk chief Sequin attacked Wethersfield with Pequot help, killing six men and three women, a number of cattle and horses, and taking captive two young girls (the daughters of Abraham Swain, later ransomed by Dutch traders). In all, the towns lost about 30 settlers.