Further to Richard:-

The original records need to be consulted.
The IGI has the mother's maiden name as Elizabeth Kewley.
It is not unusual for the maiden and marriage names to be the same.
It is unusual for the mother's married name to be given at a baptism.

There is a marriage of Philip to Elizabeth Cottier 26 Nov 1807.

Did Elizabeth Kewley marry firstly a Cottier and secondly Philip Kewley.