Baptism is an initiation rite into membership of the church. So it is normal for individuals and/or families to be attending the church for some time before the actual baptism.
Do feel free to come along on a Sunday morning (or indeed to our other weekday services) and the priest will gladly talk to you about the process of preparing for baptism for you or your child.
Sunday Mass at St Mark's is at 10.00 am.
You can make an inquiry here - BAPTISM