Mandy, George Mann Locker, bpt 4 Aug 1812, Drypool, was I believe the son of George Locker and Mary Sutcliff who were married on 4 October 1818 at St Peter, Leeds.George Mann Locker had a sister Ann Locker bpt 29 Aug 1819 who married a fellow with surname MANN, and had a son, Moses W Mann.
George Locker and Mary Sutcliffe had another child JAMES LOCKER who married Esther Nanson on 1 ost 1831, Whitby. Of their 10 children, George Mann Locker bpt 1 Oct 1833 Whitby, was a jetworker according to the 1881 census.He married a Hannah, and had 5 children: Esther Ann, Miles Corner Locker, George M Locker, James Locker, and William Locker.Esther had an illegitimate son George Locker around 1880.According to the 1881 Census, Esther and her son George were boarders in the house of Ann Elders.
My maiden name is Locker.I am not directly connected to your line of Locker, but keep what information I find as I go.
Hope this is of use to you.Good Luck with your research.