Thomas Pierson, of Caln - Source

From whom/what source does this quote in Overview come:
"a report of his will written 27 September 1722 says he died 29 September 1722, two days after making his will."

I question the death/burial date that seems to lack solid evidence. Unless there's a primary source or sold secondary sources proving his date of death, it might be best to show a range for Thomas' death:
between 27 Sep 1722 and 27 Nov 1722 — i.e., between date of his will and the inventory/probate date.

Find A Grave's volunteers are notorious for slipshod research and lack of source(s) supply.

CONFIRMATION FOR DEATH DATE: 29 Sep 1722.
Data at Ancestry without an image of original document.
Name: Thomas Peirson
Description: Decedent
Date: 4 Oct 1722
Prove date: 19 Nov 1722
REMARKS: Thomas Peirson (of Caln). October 4, 1722, died 29 September. Adm. to John Mendenhall. Inventory by John Earl and Jos. Cloud, November 19, 1722. £74 :15 :10. Surveying instruments and what belongs thereto. £1.

Original Data: Chester County Wills. Located at the Chester County Archives and Records Service.

Source Information: Lineages, Inc., comp.. Chester County, Pennsylvania Wills, 1713-1825 [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2000.

https://www.ancestry.com/discoveryui-content/view/10019:4895?tid=17...