Welcome to Ireland Reaching Out!
Have you scanned the parish register for Ballygarrett? https://registers.nli.ie/parishes/0574 I just went thru the register for 1829 and 1833 and did not see a record for Bridget or Peter. I also have an impression that not all baptisms made it to the parish register. Too many gaps. Record keeping was not as exact 190 years ago as it is now.