The IGI isn't 100% correct, but it has a birth for Isabella Renshaw on 7 April 1877 in Bessbrook, Armagh, Ireland. Parents are William Renshaw and Elizabeth Torbitt. Maria Ross wrote to this list saying she was looking for a man named Herbert Renshaw, perhaps born in Portadown, Armagh, Ireland in 1885 who had a sister Bella. The above Isabella isn't an exact match but is close enough to at least provide a lead. From online information, I gather that Bessbrook is in the Portadown district in Armagh. Eleanor Gordon