I think that the second son was already living in the house. The leftovers aren't really mentioned but I think implied with the house, grounds and appurtances. I'm wondering if as the author of the will was in at least his 80s (possibly 90s) that the second son was living in the house already. It does mention that which is 'already in his possession' in the same long phrase which includes bequeathing the house. I think one daughter must be married and well provided for and I suspect the one that receives the payment is a widow.
I bet the son that receives nothing yet gets to be executor was going to using the furniture bequested to his small children anyway!
Thank for the input, it's always useful to hear other people's take on something.