Mark,
I've put all these surnames together as quick reference! for you and more for other members of rootschat to try to solve this mystery of George Hood born 1786 ish early life pre 1812 Selby that been going on many years.
George could have been born in his mothers maiden name as illegitimate to John Hood or another fathers surname and baptised in his surname'
Jane Hood wife of John Hood a mariner buried 1803 age 65 in Selby (
most likely George Hood b 1786 ish mother and
her maiden name or her widowed surname could be George Hood baptised surname between say 1784 & 1788 in Yorkshire as 1841 census of George Hood of Selby died 1845 Selby age 60
Jane Hood marriage to John Hood mariner has never been found
Jane Hood above could have come from Tyneside George Hood baptised 1786 son of John Hood in Gateshead (This George Hood has no history of infant death/burial, marriage or an adult burial in Tyneside area and
also there was no more baptisms to a father John Hood in Gateshead parish +/- 10years before or after 1786 in Gateshead parish to another child of John Hood.
SummarySo we have a George Hood baptized 1786 Gateshead No History
George Hood
a cooper by trade appeared in Selby 1812 with no formed history known
Jane Hood wife of John Hood burial 1803 aged 65 in Selby with no known recorded marriage of the couple
Scenario - John Hood the mariner was docked in Gateshead 1786 as this and used Selby residence as a docking address 1786 to stay when there and may have had an docking address in Gateshead Ship as a Innkeeper when not there and run by Jane Hood or Jane

? maiden name (above) if they were not married.
(most likely the John Hood mariner mentioned below = John Hood born Scarborough 1737/1738 ish first wife Elizabeth Spencer her maiden name later Leppington widow died 1776 in Scarborough mother of Maudland hood/later Mrs Charles Turner of Selby.)
(Looks like ingredients of a recipe)
Only links in red in your above post.1) John Hood whereabouts 1786 (Approx estimated year George Hood born 1786 ish)
2) Maybe - M. Slipper or Slippen or Shippen or Shipper was a woman 1786 (Possible mother of George Hood maybe born illegitimate)
3) Wren Lane and Millgate Selby are very close
4) Spencer surname linked to John Hood through marriage Scarborough
5) John Spencer grocer ( according another thread was a cooper as well making wash tubs or similar etc)
6) A John Turner was a grocer (and possibly he was a cooper also)
7) Maudland Hood married Charles Turner
*) First encounter of George Hood b1786 ish was a cooper Wren lane Selby 1812
**) A - George Hood residing as a tenant in Knottingley with property owner George Wilkinson 1813 with surnames Cook and Grubb residing there in near years,
***) (Could be Jane ? ->) James Cockin witness present at George Hood and Sarah Russell 1815
Selby
****)
Some of George Hood's grandchildren (by James Hood, George Hood's son) carried surnames in their middle names, named after earlier generations.
One carried COOK (Elizabeth Cook Hood), being named after ?
One carried WILKINSON (John Wilkinson Hood) linked to James wife Sarah - Sarah's side.
One carried RUSSELL (William Russell Hood), being the maiden surname of George Hood's wife, Sarah (Sarah Russell).
One carried ALFRED (James Alfred Hood) Alfred, either a surname or forename.
One carried ARUNDEL (George Arundel Hood), being James Hood's wife Sarah Hood (nee Arundel)
One carried PEARSON (Bernard Pearson Hood)
Dobby