He married Elizabeth in 1757 in Highland, Virginia when he was 25 years old. They had seven children in 21 years.  I descend through daughter, Elizabeth Jane Erwin.

Jared Irwin furnished supplies, ABERCROMBIE & SLATTEN, VA REV PUB CLAIMS, VOL 3, P 828, during the revolutionary war and is DAR ancestor A207062.  Translation of the NSDAR Genealogist notes on application for Jared Irwin as relates to #830825 Jared Irwin and John Armstrong #003140 as noted in the side bar of the linage.  See 7th and 8th generation’s analysis:

Gen 7-8 will of Jared Erwin does not give married names of daughters, only their first names.  Will also does not name the husband of daughter Agnes.  Based on the wills of Jared Erwin, John Armstrong and William Armstrong, the family associates and naming patters, it appears logical to conclude that Agnes “Ervine” is the daughter of the ancestor Jared Erwin.

Marriage bond gives Elizabeth as a child of Jared Irwin and her spouse as William Armstrong.

Jared died in 1804 in Pendleton/Highland area of Virginia at the age of 72.  His will was probated on 3 Jul 1804 in Pendleton County, Virginia (now West Virginia).