In the current british telephone book for Northern Ireland there ae no Craige's listed
Whereas the name Craig has too many to list without a place.
Londonderry 24 Craig's and 22 Coleraine. 75 Belfast and 2 Hollywood (Solihull)
These come with a full address and postal codes. Try the Hollywood listings.
No Blackwood's listed in Northern Ireland
4 Ball's, Londonderry.
There are many books written about the Ulster Plantations, people not trees, from Scotland
The best place for passenger records is Ancestry as most smaller companies websites seem to have disappeared. If had any children in the USA you can use that date up to -2 years for date of immigration.
Parish records for Northern Ireland:
www.emeraldancestors.com and
www.rootsireland.ie both are pay websites
PRONI, public records office Northern Ireland. You may find something there?
Good luck with your searching.
Annette Code