Mary was born in 1748 in Heath Charnock and her baptism took place on February 14th, 1748 in Rivington.1
Birth Notes
Name: Mary Mather Gender: Female Birth Place: Charnock Baptism Date: 14 Feb 1748 Baptism Place: LittleLever , Lancashire, England Father: Ralph Mather FHL Film Number: 1545460
Some early Rivington Baptisms are listed on the Little Lever parish register. I suspect all Ralph Mather's children born at (Heath) Charnock were actulaay baptised at Rivington (and recorded at Little Lever).
Name: Mary Foster Gender: Female Marital Status: Married Death Age: 55 Birth Date: 1750 Death Date: abt 1805 Burial Date: 29 Apr 1805 Burial Place: Wigan, Leigh, Lancaster, England Spouse: Thomas Foster FHL Film Number: 1885700 Reference ID: it 1, p 400, L-12