Different families related to each other. They split their business a while ago and if you were to visit their apriay, they are located next to each other. R Weaver Apiaries had its begginings in 1888. It was established at the Lynn Grove Community in Texas, by Z.S. Weaver. They sell Buckfast and Italians. B Weaver , simular background, sells a combination "All Star" and Buckfast breed lines. They claim their bee are disease resistant, mite tolerant and big honey producers. I have two hives from them with no issues at this point. Anyway that's the reader digest verson heres their site:
http://www.beeweaver.com and
http://www.rweaver.com