Death (after 10 months) was "Little Bolton", so assuming this is where William was born.
Name: William Mather Gender: Male Baptism/Christening Date: 03 Apr 1836 Baptism/Christening Place: Bolton-le-Moors, Lancashire, England Father's Name: Isaac Mather Mother's Name: Mary Indexing Project (Batch) Number: I05297-5 System Origin: England-EASy Source Film Number: 1966402 Reference Number: v 1 p 285
Name: William Mather Baptism Date: 3 Apr 1836 Parish: Bolton le Moors, St Peter Parish as it Appears: Bolton-le-Moors Father's Name: Isaac Mather Mother's name: Mary Mather Reference Number: GB127.L243/1/3/12
Must have died before 1941, and not on the census after that.
Burial: 8 Jan 1837 St Peter, Bolton, Lancs. William Mather - Son of Isaac Mather Age: 10 months Abode: Little Bolton Buried by: C A Hunt Curate Register: Burials 1836 - 1838, Page 71, Entry 565 Source: LDS Film 1966471