I just was looking for information on my Donlans from Loughrea and came across this book that looks interesting on amazon. Its actually about the Lally family of Loughrea, dont know if you already know it or if it is even your family, but you might want to check it out.
The Leaving of Loughrea: An Irish Family in the Great Famine
This is the story of the Lally family between 1818 and 1848. It could just as easily be your story if you have ancestors who were among over a million people who left the beautiful and tragic land of Ireland in the 1840s. This family lived in the Loughrea area, County Galway, Ireland, and their story is similar to that of so many Irish families as they struggled against the odds, were overwhelmed by the tragedy of the Great Famine, and were forced to leave their beloved homeland. This book explores how the Irish lived at this time, how they thought, and the reasons for their situation in Ireland. It brings together the many strands of Irish society and the economics, politics, and philosophy that dominated their lives. It describes the terrible journeys that members of the family undertook to reach England, America, Canada, and Australia.