My 6x great grandmother is a Jane Mumford who married John Reynolds in Pertenhall in 1819.
I can't find any other record for her, other than the christenings/births of her children, not even her death.
Her husband John Reynolds was 41 when he married her and it was his second marriage. Since Jane had at least five children with John, I'm assuming she wasn't nearly as old as him. So I'm guessing she was born between 1790 - 1802.
John Reynolds is a widower in the 1841 census, and his last child with Jane (that I've found) was born in 1825, so her death would be between those years.