It's a tantalizer. Tonge visitated John Peck at Wakefield in 1530
https://archive.org/stream/heraldicvisitati00tongrich#page/n96/
Evidently he had 3 out of 6 daughters married, but his eldest son hadn't produced an heir yet, so we can guess that he was somwhere around 50.
And he reported that his grandfather Richard Peck had married Joan the doughter of John Haryngton esquier.
The later Visitations just copy the same information forward, which proves nothing much.
Richard's father John had been a lawyer and a big cheese locally. Sir Thomas Harrington lived a few miles away at Brierley and was a bigger cheese, he sat on the bench. He had a daughter Joan, of the right age, but she married the son and heir of Sir John Savile, the Constable.
Harrington was fatally wounded at the Battle of Wakefield in 1460. As well as the daughter Joan, he had 3 sons, all knighted. Sir John the heir apparent was killed in the same battle, leaving 2 very young girls Anne and Elizabeth, who were bought by Thomas Stanley, later Earl of Derby. This started a long-running and nasty feud between the Stanleys and the other two Harrington brothers, Sir James and Sir Robert. The Stanleys won.
Sir James married the widow of William Gascoigne XI in 1463. She was a tasty heiress, but she already had a son, W. G. XII. With James she had 2 or 3 sons. His Wikipedia page needs a rewrite.
Sir Robert had one known child, who became Dean of York.
These dates are too late. But Sir Thomas had a younger brother, John Harrington of Doncaster, esq.
This is where it gets very messy. The old books say John had a daughter Elizabeth who married Sir Richard Copley of Batley and had most of his kids, and this is supposed to explain the origin of the Copleys of Doncaster. All very neat until you try to add dates, and then it falls apart. A rescue attempt has been mounted and the jury is out.
Personally I see no big problem with the idea that Richard Peck married this John's daughter. Maybe not by his known wife. Not by a later wife, that would be too late. Possibly by an earlier wife, or of course a mistress.
I realise now there's another problem. When Clay did the Savile pedigree, he only knew that Constable John had an heir apparent John who died vp. But John jr is said to have been killed at Towton in 1461, which raises the question of his widow remarrying. She'd fit nicely if there was a good excuse for the Visitation pedigree giving her the wrong father.
