Bob, I checked the 1831 census for Co. Londonderry and found 3 out of 4 families. I've listed the ones who share common parishes. There were no Trolls listed in this census. The 1841 Co. Cavan census didn't have any except one parish with Hunters.. Lusk - Ballynascreen Errigal Hunter - Ballynascreen Errigal Banagher Templemore Dungiven Hutton - Banagher Templemore Dungiven Hope this helps. Joan Hunter, Essex, Ontario Hunter, Hamilton, Doak, Atwell - NIR Lobb, Adams, Cowling - Cornwall Ferenczi, Szombati, Udvari, Molnar - Hungary/Romania