Fee Brothers came into being in 1863 when the second generation Irish immigrant Fee family opened up a grocery and liquor store under the management of 25 year old James Fee. The operation expanded over the years to importing and bottling wine became popular in the latter part of the 20th century as a maker of cocktail mixers. The business has been relabeled and reborn in the 1990s and is now expanding its product line of mixers and bitters.
Fee Brothers Plum Bitters is a proofed cocktail ingredient that is, oddly, not currenly acknowledged on their website (as of October, 2011). We presume it would be useful in fruit-forward and brandy cocktails.