Do as much research as possible before you go so you're not spending precious time in libraries. Unfortunately Newport/Burrishoole church records don't begin until 1872, but you might find the baptisms of some of the older children if you use the rootsireland.ie site and do a search that includes parents' names and parish to eliminate red herrings. Also, civil birth registration began in 1864, so you might look for births of those children born after that date and registered in Newport district on the familysearch.org site. As to Mayo sites, Ballintubber Abbey is fascinating and the Mayo coast is wonderful. Use Google.ie and/or Ireland tour books to get more ideas. Diane