Roobarb,
Just in case Ralph Forster and Mary Rutter are yours:
Baptism St John's Chapel
Betty Foster, born 14 Mr 1801, baptised 12 Apr 1801, 2nd daur of Ralph Foster, of Huntshieldford, miner, native of this parish by his wife Mary Rutter, native of this parish
Thomas Forster, born 26 May 1802, baptised 27 Nov 1802 5th son of Ralph Forster, of Huntshieldford, miner, native of this parish by his wife Mary Rutter, Native of this parish
There are quite a few others. I don't have baptisms for St. John's Chapel after 1812. If Mary married when she was 18 she would only be 43 in 1812. My great grandmother was 50 when she had her last one!!!!
Janis