Registration of deaths didn't start until 1864 in Ireland. If Edmund Ronalds was living in Galway 1840-50s, and his mother visited him and died during this time period, you will not find her death in the civil records. There is a chance her death was recorded in the parish records (St. Nicolas Church of Ireland + RC records have survived) Have you tried rootsireland.ie for a burial record? There could have been some mention of the event in the local Galway newspapers. Possibly an obituary in the newspapers in her home town (?) as well. Searching newspapers is difficult when you don't have at least an approximate date . Do you know when Edmund moved to Scotland? He was still in Galway when Griffiths' Valuation was published in 1855, living in Montpelier Terrace (off Sea Road) Townparks, Rahoon. If you check with Griffiths' Revisions, you can determine the approx date he left Galway by the transference of his house there to another tenant. (on LDS film) familysearch.org has the Irish Civil Registration Indexes, but for the most part, these will be too late for your purposes. (2 of Barbara MacMullen's children are listed on their Irish Birth records (previously Vital Records ) Cathy