Baptism makes an ontological change in a person. Ontological is the very essence of what you are, your being. You are a different being after being baptised then you were before and nothing can change that. Baptism makes you a child of God and capable of achieving heaven.
from The Catechism of the Catholic Church, 2nd edition:
1265 Baptism not only purifies from all sins, but also makes the neophyte "a new creature," an adopted son of God, who has become a "partaker of the divine nature," member of Christ and coheir with him, and a temple of the Holy Spirit.
1272 Incorporated into Christ by Baptism, the person baptized is configured to Christ. Baptism seals the Christian with the indelible spiritual mark (character) of his belonging to Christ. No sin can erase this mark, even if sin prevents Baptism from bearing the fruits of salvation. Given once for all, Baptism cannot be repeated
no recording of him being baptised
Baptism is a ceremony carried out by a member of the church (the pop or the vicar). They dab the sign of the cross onto your forehead with holy water taken from the Font. People get baptiseed because they believe by being baptised they are following in Jesus's footsteps. Also they are joined to the church by being baptised.
No the person would have to be still living. If someone has died without being baptised a 'Prayer for the dead' can be said and offered up.
Yes, anyone who hasn't been baptised before (Being baptised in another Church and going to the Catholic doesn't require another baptism) can be baptised. Talk to the parish priest and he'll tell you the informaiton you need.
You can't, because it never happened.
Yes, anyone can attend, baptised or not baptised.
No Peter was not water baptised.
*67 or just do the number
He was baptised in the church in Stratford.
I think Ameyeouse baptised saul
An affusion is a pouring of liquid, such in a Christian baptism where water is poured on the head of the person being baptised.
Being anointed is like being baptised, except with oil. People who have been "anointed" are said to be somehow chosen by god.