`  == A fine point ==  :I'm descended from the Hillman firm of car makers, ... You are not descended from a firm but from, perhaps the leadership/founders of a firm?  A minor point indeed, but clarity is best.  ``Makers`` is still slightly ambiguous since automobile companies can be ``car makers`` and individual laborers or craftsmen and middle managerment can also be car makers.  And if you are more specific, the story is more interesting.    `