Some researchers think that my John Randerson, who lived out his life as a labourer in East Keswick and Bardsey, and who gave his birth place in census for 1851 and 1861 as Saxton and East Keswick respectively, was the one born to William and Elizabeth in Leeds in 1807.
I started at archives trawling Directories / Electoral Roll volumes, Census microfilms and GRO Index fiche to buy all the Death, Marriage & Birth Certificates I had not got.
I don't follow online trees, many when checked against documents have awful errors.
Somebody has even tried to change the surname HOOD to Wood (and got the poor Census image listed online as Wood). However, I already had an Official Copy GRO Certificate and now also have a photocopy of an original 1870s Full Birth Certificate from my relatives which confirms HOOD and the Father also HOOD and the Mother's nee surname, so definitely not Wood!
Those Present at MarriagesWhen your mystery Birth Gt Grandparent later married, in whose "Presence", i.e. who witnessed his Marriage?
Occasionally, at Marriage they can be Church officials (usually signing others), very occasionally Work colleagues or even Neighbours in the Census.
However, one or both of those Present as witnesses at many family Marriages are family surnames by marriage/s from an earlier generation, or relatives in a parallel line. So a clue might even be in a more recent Marriage Certificate too.
CensusMany Census "Visitors" (or even a "Lodger") may also be distant relatives I'm finding, so I'm working backward from an 1891 Census Visitor, who can be linked (using Register images and Wills) to a Hood family 140 years beforehand, but may even be a coincidence yet.
Also relatives are listed too if present at the Census.
WillsDid your family leave Will/s? They may lack detail or be a wealth of family information?
Registered Wills on the Probate Registry at gov.uk after 1858, on/after the Death year (£1.50 each ordered and received online Pdf b&w).
Before 1858 at the Borthwick Institute, for Yorkshire (with a few Yorkshire ones Registered as PCC).
GeneralAt the end of the day, I'm afraid my HOOD ancestry is a mystery about 1785 - 1786 (Dead before 1851 and no obvious Yorkshire Birth).
Nonconformist or Illegitimate or from elsewhere.
His 1815 Wedding was in two Newspapers, Overseer of the Poor one year, Registered Property and Will (all seen) etc.
I can use documents to suggest (but never confirm) a link to four other HOOD families before 1785, but without a crucial document naming my actual ancestor with his abode and linking him direct to one, he remains a mystery.
Mark