Hello Jeanie,
The 1841 shows that Mary Ann was 4 years old so born between 1836/7.
This is one to keep on the backburner as I think she may have married a John Gerrard at St. Mary`s, Eccles in 1860, but unfortunately the full record is not online. I would suggest checking
www.lan-opc.org.uk from time to time as it is updated regularly. I have looked at the 1861 - 1901 census and it shows she was born Pendleton. Her age did vary though - 22, 32, 43, 55 and 64

. They lived in Bedford, Leigh and all children are shown with the mothers maiden name of Lingard on
www.lancashirebmd.org.uk .
Kind regards,
Mo