My Margaret has been known to add another "t" to the end of her first name. I don't know where she is from and have only recently found the name of the ship she came on and when. A helpful person on a list I belong to found that information for me . She was definitely a famine immigrant as she came in 1850. I've been searching the County Clare web site and did find a Michael McMahon who was evicted from his home in 1849. There are six persons in the household 3 males and 3 females. I'm still in the early stages of my McMahon search. Any help will be greatly appreciated.