Possible Clues:

• Lake dwelling in Scotland or Ireland
• Casually going to Roman Catholic returning home in Ireland once
• Small island artificially enlarged and fortified
• Made tracks with musician at last and minor player outside old dwelling
• Ancient Scottish/Irish fortified dwelling
• Lake dwelling in Scotland and Ireland
• Keep in a wet place quantity of herrings that's no good
• Sandstone houses new - no old dwelling
• Measure of herrings and alcoholic drink at an old lake-dwelling in Scotland