The observations in column 8 are mainly routine. To the effect that either the banns have been performed three times, or not. If not, there is a dispensation from the vicar general - often abbreviated V.G. The entry for Peter Kearney does not appear to relate to banns, but tells us that the dispensation is from the vicar capitular - which appears to be unique.
The vast majority of marriages have no entry in column 9, which is for "Impedimentum", that is, for actual impediments to a a marriage being performed. There is an entry for column 9 for Peter Kearney, and we can gather that it was a serious one, as it required dispensation at the level of the Archbishop of Dublin. The see being vacant at the time, the task of dispensation fell instead to the vicar capitular for the time being, Dr. MacCabe.
Unfortunately, the reason for the "impedimentum" - given in the first line of column 9 - is obscure, due to the handwriting.