Hi My maternal line has James Carroll marrying Maria Byrne in 1839 Kildare. Now I have been in touch with Eddie Byrne from Finte O'Broin who says that James Carroll was probably born in Killavanney,Wicklow in 1804. In the early 1800's families like the Carrolls and Byrnes came from Wicklow to work on the Grand and Royal Canals. Maria was born on The Old Bog Road near Carragh. In 1851 there was a William and James Carroll in Kilmeague in Allen. You have checked out the Griffiths valuation? My James Carroll lived in Bow Lane West in Kilmainham, Dublin for some of the time.