Hi Maggie
The marriage is on the old IGI & the new Family Search - an extracted record.
Susan LLOYD, father: Major LLOYD
Edward BIRT, father: William BIRT
This indicates she wasn't married before, perhaps?
Have you any other documentation - aside from 1881 Census that has her age as 56 & consistent with a ~1825 birthyear?
In 1881, she & Edward (age 50) are in Sutton (which is in Hereford registration district) , address: Lower House (for ref: family of Henry Chadney nearby). RG11 / Piece: 2592 / Folio: 67 / Page: 13
In 1891, Edward is at the same address (age 59) with a new wife named Emma (age 44). (for ref: family of Henry Chadney nearby). RG12 / Piece: 2060 / Folio: 161 / Page: 10;
The only suitable death on FREEMDN that I can see, is:
Hereford, Sep Qtr 1881 - Susan BIRT age 77.
And a re-marriage for Edward, Mar Qtr 1891, Hereford:
Edward BIRT
Emma CONSTABLE (only two names on page per FreeBMD).
Could Susan have been 20 yrs the senior of Edward!? If she was, then 1841 Census for MArden has: Major LLOYD age 70, Ann LLOYD 60, Susannah LLOYD 30, William LLOYD 25.
Which is: Baptism in Marden 23 Aug 1807, Susannah LLOYD
Father: Major LLOYD, Mother Ann
Cheers
AMBLY