I believe one of the brothers, probably John (b 1898) or William (b 1908) emigrated to the US. In 1911 they were living in Salisbury Street, Bermondsey, London, with father Roger Carroll & mother Mary. There was a third brother Roger (b 1900). It might have been him but he married Elizabeth Coakley in Bermondsey 1922, where I think he stayed. Any info much appreciated.