gamelife,
In my opinion I do not know what brown-reds really are as coloration and genetics behind has it been a recently acquired interest. Birds I have are not derived from a pure-bred line based on coloration where color genes known. They are from my families line that used to be repressent by a racemic mixture of black breasted reds, brown breasted brown-reds, red quill, and small number of almost black birds that almost always came from a mating involving red quill colored birds. Breeders names going into their makeup are unkown with certainty to me and their last significant inputs from such occured before I got into them back in the late 1970's. Based on memory of what Great Uncle said, they have some Hatch and Doc Knieford (black) in them. Hatch is a well known name but the Doc Knieford line appears to have been a name of local importance only.
Even if "known", the names are not all that informative especially if birds are not directly from hands those that developed line. When a small number of birds are acquired from a known stock and put through multiple generations of inbreeding you are gonna quickly end up with something that does not truely repressent the strain from which they are derived. The vast majority of birds classified as being of one line or another I have seen are not true repressentatives of those lines. This I am inclined to suspect when keeper of games has only a hundred birds but has twenty different lines on place.