I can't help you much with the Stouffers, as the only one in my database is Elizabeth Stouffer, who married John S. Stillwagon.
However, I'm fairly certain your Jacob is the brother of my Henry Abraham, who married Frances Stewart (who I believe was the daughter of Abraham Stewart). Henry Abraham Strickler was born 4-24-1763 in Hellam, York, Lancaster Co, PA and married Frances Stewart about 1793.Their children were Jacob D., Elizabeth, Nancy, Frances, Rebecca, John R., and Henry Rice (my ancestor).Henry A. and Frances, as well as Henry Rice and his wife Susanna Slonecker, are buried on the old farm in Upper Tyrone Township, Fayette County, PA (near Connellsville).
Here's what I have on Jacob and his family: (You probably already have most of this)
From Stricklers of Pennsylvania:
He was baptized 3/29/1750 in the Dutch Reformed Church. He settled in Fayette Co. He came to Fayette Co. about 1787 and settled in Tyrone Twp. On 1/13/1789 he received a deed from Jacob Stewart for 394 acres, situated on Jacob's Creek. Here he established his home, built a grist mill and a sawmill. He married Elizabeth Stewart, sister of Jacob Stewart, and they lived on this farm the remainder of their lives. Before his death Jacob divided the farm among his four sons and gave them deeds for same. His Will is registered in Uniontown, Pa. He is enumerated in the first census of 1790 in Tyrone Twp., Fayette Co., Pa. He served in the Revolution in Southampton Company, Capt. John Folwell, Bucks County, Pa. (Penna. Archives, Fifth Series, Vol. 5, p. 309.)
Will of Elizabeth Strickler, Dated: 10-30-1828, Probated: 12-6-1828, p.993
Wife of Jacob Strickler, deceased, desired David Strickler her son and Barbara Stauffer & Mary Longenecker her two daus.
Witnesses Samuel Kelly, Elizabeth Whitmore
Will of Jacob Strickler, Jacob's Creek in Tyrone Twp, Fayette Co, PA, p.990
Dated: 2-18-1825, Probated: 10-13-1823
Wife Elizabeth, four sons Henry, John, Jacob & David.
Dau. Mary intermarried with Jacob Longenecker
Grandson Jacob Stauffer if he & his wife should live together and have children
Witnesses Nathan Reed, Jacob Strickler
Witness to codicil Christian Sherg, Barbara Stauffer
Jacob's daughter Elizabeth, who married Moses Vance:
"A descendant of the MOSES VANCE Family, who retained a copy of their original family bible, states several of the MOSES VANCE descendants were buried in this same cemetery, but no doubt their stones were destroyed when the Railroad constructed their branch, or they could have been moved elsewhere, but the above two stones remain under a group of trees.
MOSES VANCE, b. 5/23/1773; died 1/27/1829; married ELIZABETH, daughter of
JACOB & ELIZABETH STRICKLER, settlers in Tyrone Township in 1797.
ELIZABETH STRICKLER, b. 1773; died 9/8/1849, and both (husband and wife)
are buried on the NATHANIEL KING Farm.
JOHN VANCE, b. 1/11/1797; d. 3/12/1886; married MARY STRICKLER, daughter of ABRAHAM STRICKLER.
JACOB VANCE, b. 11/7/1798; d. 11/4/1883; married CHARLOTTE HARDY
SAMUEL VANCE, b. 7/30/1800
FRANCES VANCE, b. 3/27/1802
WILLIAM VANCE, b. 12/6/1804
CRAWFORD VANCE, b. 3/13/1806; married SUSAN CLAYTON
MARGARET VANCE, b. 3/29/1808
ALFRED VANCE, b. 4/22/1810
ELISA VANCE, b. 9/22/1813; single
GEORGE VANCE, b. 1/12/1815; single"
[Reference, MOSES VANCE FAMILY, found in the book "History of Fayette County, Pennsylvania, pages 401, 784, 787", by author Franklin Ellis; information transcribed for PA Archives, November 1997.]
"At the March term of the Court of Quarter Sessions of Fayette County in 1822, Isaac Meason, Moses Vance, and Thomas Boyd were appointed commissioners "to enquire into the expediency of dividing Bullskin township, and forming a new township out of part thereof, to be called Connellsville township." ['History of Fayette and Greene Counties.Everett 1882]
Jacob's son Jacob,who married Mary Fiscus:
1850 Fayette County PA Census, Tyrone Township:
1870 Fayette County PA Census, Luzerne Township:
Jacob B. Strickler/78/PA