To the good

[Johnyxxx]

Hello,

Can anybody tell me what the bold text means?

‘What came after, now?’ the little man repeated, drawing his right hand gingerly out of the depths of his pocket and smoothing down his face with it as if he had suddenly discovered he was tired. ‘Well, a good deal came after, but not quite what you might have expected. And you’d hardly go so far as to say perhaps that anxiety over his grandson would excuse him for what was little short of manslaughter, and him a good six inches to the good at that? Keeping facts as facts, if you’ll excuse me, our friend waylaid George by the stables that very evening, and a wonderful peaceful evening it was, shepherd’s delight and all that. But to judge from the looks of the young fellow’s face when he came into the house there hadn’t been much of that in the quarter of an hour they had had together.

Crewe, Walter de la Mare, 1929

Thanks a lot.

 

[emsr2d2]

Without knowing what happened around it, it's hard to say. My guess would be that "he" is six inches taller than someone else who has previously been mentioned and that their height is in some way relevant.