Perhaps someone else has already sorted this

but because I just worked it out for myself

I am going to lay claim to having 'delicately damaged' another Martins Brick Wall!

For years I could not work out why Arthur Martins was enumerated with Charity Martins at Ludgvan in the 1841 Census.

After all - he was the son of John and Catherine Martins of Towednack and his baptism can be found in the CFHS Index as occurring 3rd July 1818 at Towednack.
In later times (1851 Census) he says he was born at Ludgvan but it is not unusual to see a Ludgvan birth followed by a Towednack baptism and vice versa.
But Arthur had company that day in July as, presumably his cousin, William son of James and Charity Martins was also baptised on the 3rd at Towednack.
All clearly recorded in the CFHS index:-
Arthur son of John (carpenter) and Catherine Martins baptised 3rd July 1818
William son of James (miner) and Charity Martins baptised 3rd July 1818
Can't go wrong.

Or can you!

When Arthur was married at Ludgvan 5th February 1842 he stated that his father was JAMES MARTIN, miner
Well ..... we have had quite a bit of experience with this sort of thing now and it is obvious that Arthur (or someone) got it wrong.

A bit like George Quick who said he was son of George when in fact it turned out that he was really the son of William!

But WHY was Arthur with Charity in 1841?

Now ................... it was when I noticed that Arthur and William were baptised on the same day that a little tapping began on the inside of my scone and as I don't have any aspirin in the house I had to seek out another method to subdue the headache that was rapidly forming!

I checked the baptisms again and, sure enough, all was as I had seen before.

So the next logical step was to see if perhaps William might still be alive and if he also got hitched.
The OPC list of marriages for William Martins produced an interesting looking one at Towednack which would have been around the right time so a bo-peep at the complete record was obviously in order!
UH-OH!!

Wm MARTINS of full age, blacksmith of Towednack,
son of JOHN MARTINS, joiner married Eliza BENNETS of full age, spinster of Towednack, 31st May 1840 at Towednack
A quick check of the 1851 Census showed William Martins (now a tin dresser) living at Amalveor with wife Eliza and several children.
He was age 32 and born at Towednack.
Hmmm ..... same age as Arthur in the same Census!
And one of his daughters was named Catherine P Martins. I would be guessing that her full name was Catherine PENBERTHY Martins with Catherine Penberthy being the wife of John Martins.
It would appear that the game of SWAP THE BABY was alive and well in 1818!

But who do we blame for this mess?

Having not seen the entry myself in the original register I am loathe to blame the CFHS transcriber.

And the only alternative is that the details of the two baptisms were incorrectly entered way back in 1818.
Whichever way it happened I have no solved the mystery that has been annoying me for a great many years. ;D
Arthur was the son of James and Charity
William was the son of John and Catherine
And now, once I have tidied up this little mess in the database, I might have another crack at identifying Arthur's father James!

CT