All this region in the early times was the home of the Niantic Indians, a clan of the Narragansetts, their sachem being Ninigret, the brother of Canonicus and uncle of Miantonomoh, whose names are preserved in powerful American warships. Beyond the Thames is Groton, known as the home of Silas Deane, the early American diplomatist, a hilly township, with little good soil. On its verge are Fort Hill, where Sassacus, the sachem of the Pequots, had his royal fortress, and Mystic, with the popular resort of Mystic Island just off shore. To the northward of Mystic is Pequot Hill, where Colonel Mason attacked that tribe in May, 1637. He had marched out of Rhode Island with ninety English and over four hundred Mohicans and Narragansetts under the sachems Uncas and Miantonomoh, but when they arrived at the Pequot stronghold, the Indian allies were afraid to attack and drew off. Nothing daunted, Mason and his colonial soldiers prepared to do the work alone, and as a preliminary knelt down in prayer. At the sight of this, another sachem, Wequash, who had been their guide, was amazed and asked an explanation, and when he understood it, became so impressed that he was converted, afterwards preaching throughout New England. Mason and his men assaulted the stronghold in the darkness, and got inside the palisades, but being overwhelmed by the superior numbers, fell back after setting fire to the wigwams. The fire compelled the Pequots to flee, and then the English and friendly Indians surrounded the hill and shot down the fugitives, there being six hundred Pequots shot or burnt, this being the death-blow to the tribe. Old Cotton Mather, who recorded it, wrote: "It was a fearful sight to see them frying in the fire, and the streams of blood quenching the same, and horrible was the stink and scent thereof; but the victory seemed a sweet sacrifice, and they gave the praise thereof to God." Sassacus, from Fort Hill, sent reinforcements, but they were too late, although they harassed Mason's retreat, and Sassacus was soon forced also to flee, the remnant of the Pequot tribe being killed or captured in Sasco Swamp.