I am looking for information on Henry Mullin and Ann Diamand Mullin in Northern Ireland. I believe they were in Tyrone or Londonderry. Three of their children, Cornelius, James, and Grace emigrated to the U.S. in the mid to late 1840's and they settled in Dubuque County, Iowa. The sons were farmers in Iowa and their parents in Ireland were also farmers. Would appreciate any info on this family such as how many siblings stayed in Ireland, Date of Death and location for Henry or Ann or any of their offspring.