Summary for these Sheldons
Sheldon Doreen M & Burley Albert C Plymouth 5b 772 marriage 2 1920
Sheldon Doreen Mary Tapper Plymouth 5b 249 birth 3 1899
Sheldon Jasper James & Tapper Elizabeth Agnes Plymouth 5b 460 marriage 2 1890
SHELDERN Jasper James Williams Plymouth 5b 302 birth 2 1868
Sheldon Jasper J age 75 Plymouth 5b 382 death 1 1944
Sheldern James & Williams Emma Jane Plymouth 5b 457 marriage 2 1867
Sheldon James Adams Plymouth 9 384 birth 4 1846
Sheldon James Short Plymouth 9 377 birth 4 1846
Sheldon James Plymouth 9 275 death 4 1846
From BMD data etc it looks as though there were 2 James Sheldons born in Plymouth in 1846.
To be accurate we really need more info to get some positive ID. Really need the Sheldon/Sheldern-Williams marriage certificate which would give their fathers
names, occupations etc.
Looking at censuses and eliminating one of the James born in 1846 and using the baptism record of the other.
It is most likely that James had parents Samuel Sheldon and Mary Short.
Samuel Sheldon and Mary Short married in 1835
censuses suggestes Samuel’s age between 1813-1817, it is more likely to be 1814 or earlier as he would have been at least 21 yrs of age.
There doesn’t appear to be any baptism records for Samuel in Devon around this time.
Looking at the name of his first son George, there is the possibility that Samuel’s father was a George.
Websites such as ancestry are adding to their Devon records every now and again. So in my opinion, we are just guessing that Samuels father is George c1780 and his father is George c1750