It means that Reuben Wallace was worth forty thousand dollars at the time of his death, and that that forty thousand dollars was invested with this New York coal merchant.
Angus Pritchard is my husband's uncle--yes, and a coal merchant in New York.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "coal merchant" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
