baronets, of Martholme (1931) Sir George Roberts, 1st Baronet (1859–1950) References Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990. Baronetcies in the Baronetage of the United Kingdom Extinct baronetcies in the Baronetage of England Extinct baronetcies in the Baronetage of the United Kingdom 1620 establishments in England