Yes I have contacted her, she was also stuck on my John Fishwick for now! No-one knows exactly when he was born. Need to get to Kew to look at the excise officer minute books, might have a clue to when he was born in there..
Anyway, this is that Jane Fishwick at Gregson St on the 1851 census. The plot does indeed thicken, she appears to be a spinster:
31 Gregson St
HOLLAND, Thomas Wid b. 1786 Callender
HOLLAND, William Son Marr, b 1819 Callender
HOLLAND, Sarah Dau-in-law Marr b. 1825
HOLLAND, Elizabeth Grand-dau b. 1842
HOLLAND, Ellen Grand-dau b. 1846
HOLLAND, Thomas Stepson b 1849
FISHWICK, Jane Aunt Unmarried b 1784, on parish relief
All born Manchester. This is on the 'rescued' census for Deansgate that was damaged
8 May 1808, marriage at Manchester Cathedral, Thomas Holland to Elizabeth Fishwick (on Family Search)
Jane and Elizabeth Fishwick are sisters?