Of Gerrit Martense's descendants less is known than of himself; since they were all reared in hatred of the English civilization, and trained to shun such of the colonists as accepted it. Their life was exceedingly secluded, and people declared that their isolation had made them heavy of speech and comprehension. In appearance all were marked by a peculiar inherited dissimilarity of eyes; one generally being blue and the other brown. Their social contacts grew fewer and fewer, till at last they took to intermarrying with the numerous menial class about the estate. Many of the crowded family degenerated, moved across the valley, and merged with the mongrel population which was later to produce the pitiful squatters. The rest had stuck sullenly to their ancestral mansion, becoming more and more clannish and taciturn, yet developing a nervous responsiveness to the frequent thunderstorms. Most of this information reached the outside world through young Jan Martense, who from some kind of restlessness joined the colonial army when news of the Albany Convention reached Tempest Mountain. He was the first of Gerrit's descendants to see much of the world; and when he returned in 1760, after six years of campaigning, he was hated as an outsider by his father, uncles, and brothers, in spite of his dissimilar Martense eyes. No longer could he share the peculiarities and prejudices of the Martenses, while the very mountain thunderstorms failed to intoxicate him as they had before. Instead, his surroundings depressed him; and he frequently wrote to a friend in Albany of plans to leave the paternal roof. In the spring of 1763 Jonathan Gifford, the Albany friend of Jan Martense, became worried by his correspondent's silence; especially in view of the conditions and quarrels at the Martense mansion. Determined to visit Jan in person, he went into the mountains on horseback. His diary states that he reached Tempest Mountain on September 20th, finding the mansion in great decrepitude. The sullen, odd-eyed Martenses, whose unclean animal aspect shocked him, told him in broken gutturals than Jan was dead. He had, they insisted, been struck by lightning the autumn before, and now lay buried behind the neglected sunken gardens. They showed the visitor the grave, barren and devoid of markers. Something in the Martenses' manner gave Gifford a feeling of repulsion and suspicion, and a week later he returned with spade and mattock to explore the sepulchral spot. He found what he expected--a skull crushed cruelly as if by savage blows--so returning to Albany he openly charged the Martenses with the murder of their kinsman.