on FindMyPast the 1891 Census record appeared ok. I've found this stuff:
1901 Census: 48 Essex Street, Toxteth Park, Liverpool:
Mary J Watkins mother/married 48/1853 B Ireland
Rostevon?1911 Census: 39 Tennyson Street, Toxteth Park, Liverpool:
Mary Jane Wagstaff head 60/1851 married 34 years/1877 B Warrenpoint County Down Ireland Resident.
1937 FreeBMD D Search: JFM 1937 Liverpool South 8b 253 Mary J Wagstaff aged 84/1853.
1937 FreeBMD D Search: JFM 1937 Liverpool South 8b 253 Mary J Watkins aged 84/1853.
Mary Jane reverted to her Wagstaff name on the 1911 Census with her three boys. It would be interesting to find out what name she used on her headstone (if any)...
And here is one of her boys:
1939 FreeBMD D Search: JAS 1939 Liverpool South 8b 178 Hugh Wagstaff aged 56/1883.
1939 Allerton Cemetery MI's: CE Section 14 Grave 257: SACRED / TO THE MEMORY OF / HUGH WAGSTAFF / BORN 24TH JUNE 1883 - DIED 25TH JULY 1939.
1939 Wills Calendar: WAGSTAFF Hugh of
Clonallon Aigburth-road Liverpool died 25 July 1939 Probate Liverpool 25 September to William Henry Wagstaff assistant catering manager and William Abercromby solicitor. Effects £28190 19s 8d. Resworn £28905 13s. 10d.
Quite a bit of money there ... note the house name...
http://www.libraryireland.com/topog/C/Clonallon-Upper-Iveagh-Down.phpSo I think there is some link to Clonallon near Rosstrevor.
Griffiths Valuation lists Gribbin/Gribbon in Clonallon, but I see no Henry's there.
Paul.