broker vs. merchant vs. manufacturer

I have found my ggg-gf described variously as a merchant, a broker, and

Eve McLaughlin...

a merchant may buy and sell anything; a briker is really a middleman
bringing together A qith goods and B who wants them, though he may
physically handle the stuff briefly.
So these two terms are the grander and less grnad version of the same
thing.
Presumably he then found there was most money to be made out of selling
glass and glass objects, so he concentrated on that, even making the
stuff himself.

Eve McLaughlin...

broker

Eve McLaughlin...

with

Eve McLaughlin...

I must get a better light, and less arthritic fingers.

a glass manufacturer, all between 1825 and 1830. Could these three
terms all describe the same occupation at this period? Or should I be
thinking that he had more than one line of business?

(He is William ORFORD, b. ca. 1895, d. 1832. He lived at Beau Street,
Liverpool, and had a bottle works at 190 Vauxhall Road with a partner
named Foster. See
for more on his family.)