It is a help when tracing your family history to know something about the origin of and evolution of Irish names and particularly how names have changed over the centuries.
Repayment mortgage. With repayment mortgages you pay the interest and part of the capital off every month. At the end of the term, typically 25 years, you should manage to have paid it all off and own your home.
A balloon mortgage is a mortgage that does not fully amortize over the term of the loan, and therefore, a large portion of the principal balance is repaid with a single payment at the end of its term (hence the term, balloon payment)). Typical terms are five or seven years.