Thinking the matter over continually with himself, however, he came in the end to the natural conclusion that one explanation alone would fit all the facts. He was not his father's eldest son at all. Colonel Kelmscott must have been married to some one else before his marriage with Lady Emily. That some one else's son was the real heir of Tilgate. And it was to him that his father, in his passionate penitence, proposed, after many years, to do one-sided justice. Now Granville Kelmscott, though a haughty and somewhat head-strong fellow, after the fashion of his race, was a young man of principle and of honour. The moment this hideous doubt occurred to his mind, he couldn't rest in his bed till he had cleared it all up and settled it for ever, one way or the other. If Tilgate wasn't his, by law and right, he wanted none of it. If his father was trying to buy off the real heir to the estate with a pitiful pittance, in order to preserve the ill-gotten remainder for Lady Emily's son, why, Granville for his part would be no active party to such a miserable compromise. If some other man was the Colonel's lawful heir, let that other man take the property and enjoy it; but he, Granville Kelmscott, would go forth upon the world, an honest adventurer, to seek his fortune with his own right hand wherever he might find it. Still, he could take no active step, on the other hand, to hunt up the truth about the Colonel's real or supposed first marriage. For here an awful dilemma blocked the way before him. If the Colonel had married before, and if by that former marriage he had a son or sons--how could Granville be sure the supposed first wife was dead before the second was married? And supposing, for a moment, she was not dead--supposing his father had been even more criminal and more unjust than he at first imagined--how could he take the initiative himself in showing that his own mother, Lady Emily Kelmscott, was no wife at all in the sight of the law? that some other woman was his father's lawful consort? The bare possibility of such an issue was too horrible for any son on earth to face undismayed. So, tortured and distracted by his divided duty, Granville Kelmscott shrank alike from action or inaction.