I think, thanks to Ancestry releasing Derbyshire archives records, I've cracked it! Can anyone just double check please? So I found the marriage of Oliver Richard Anderson in 1815 to Mary Gibson and wasn't certain if Mary was the mother of my ancestor, Richard's daughter Elizabeth born 1826 but I have been able to look up the actual marriage entries and I think they are the parents of my Elizabeth.
Richard's signature looks the same in all the entries.
Oliver Richard Anderson, Batchelor, Framework Knitter married Mary Gibson, Spinster, in 1815. Witnesses Martha Gibson and Edward Keys.
Richard Anderson, Widower, married Catherine Sanders, Widow, in 1832. Witnesses Mary Gibson and Jane Ferguson.
Richard Anderson, Widower, married Margaret Davis, Widow, in 1836. Witnesses Charles Porter (?) and Eliza Bennett.
Entries can be seen here:
Marriage to Mary: Derbyshire Record Office; Matlock, Derbyshire, England; Derbyshire Church of England Parish Registers; Diocese: Diocese of Derby 1815
Marriage to Catherine: Derbyshire Record Office; Matlock, Derbyshire, England; Derbyshire Church of England Parish Registers; Diocese: Diocese of Derby; Reference Number: D 1792/3/6 1832
Marriage to Margaret: Derbyshire Record Office; Matlock, Derbyshire, England; Derbyshire Church of England Parish Registers; Diocese: Diocese of Derby; Reference Number: D 1792/3/7 1836
Does anyone else think Oliver Richard Anderson is my Richard Anderson?