A girl was lost in the water depths.
What was her name?
I have the parish register
But what is her name?
The church usually keeps track of the names in parish register. ( Go to the church and find the register book. )
Go to the church and find the register book.
Now, just spot the correct name from there.
Examine the tombstones for clues. ( Read the tombstone right of the crypt. )
Read the tombstone right of the crypt.
Yes, their daughter was lost to the watery depths.
Use the parish register to that tombstone.