First, I am not a MITCHELL researcher, except tangentially, but I am a CASTEEL researcher.

Interested in exchanging info on the following people - you may have to look through to find the Mitchells, but they're there.

These records are chronological and run from Prince Georges Co., MD, in 1771; to Washington Co., PA prior to the Revolution; to Washington & Greene Cos., now-TN close to 1790; to Knox Co., TN, by 1800.

DEED: MD; Prince Georges Co.; Book AA, No. 2, page 291
30 Aug 1771, Edmund Casteel, conveyed to James Mitchell a part of "Casteel" plantation

WILL OF EDMOND CASTEEL: MD, Prince Georges Co.; Orphan's Court, Liber T1, folio 48; dated 7 Apr 1772; proved 24 Mar 1773
To son: Shadrack Casteel. To wife: Rebeccah Casteel, all of my personal estate, part of tract Casstell, part of Edmond's Frolick enlarged, during life then the remaining part of my lands and goods to be acually divided amongst my children, Shadrack, Machack, Abednego, Francis Casteel, Lucy Athy, Kezia Mitchal, Susanah Scarce, Sarah Medley, Cassander Cassteel and Charity Cassteel. Daughter Cassrander Cassteel, excx. (Signed) Edmond Casteel
Witnesses: James Moore Senr., Samuel Moore, Zadock Moore

LISTS OF INHABITANTS IN WASHINGTON COUNTY, PENNSYLVANIA 1800 OR BEFORE WITH MAPS OF EARLY TOWNSHIPS. (1776-80 petiton, 1800 county census) Raymnd Martin Bell. Washington & Jefferson College: Washington, PA. 1961.
Names on 1776-80 Pettions p. 11
Aaron Rawlins, Francis Castile, James Mitchell, Mauraice Mitchell, Jacob Husong

MILITIA: PA; Washington Co.; Pennsylvania Archives, Series 6, Vol. 2
Capt. Ezekiel Rose's Company (SELECTED NAMES ONLY)
Morres Mitchel, Francis Casteel,James Mitchal, John Varvel, Henrey Athey
Capt. Benjamin Stit's Company
Phillip Varvell, John Casteel,

PETITION: NC; Washington Co. (now Tennessee); Petition of the Inhabitants of the Western Country (to form the State of Franklin) SELECTED NAMES ONLY 1787
James Mitchell, Moses Moore, Matthew Rue, Michael Rawlings, Ashael Rawling, Dan'l Rawlings,John Husong, Frenses Casteel

DEED: TN; Greene Co.; Greene County, Tennessee, Deed Abstracts, 1785-1810. Volumes, 2, 4, 6, 7 and 8. Joyce Martin Murray. 1996; Dallas, TX. Page 26
From Greene County Deed Book 1, p. 340
13 Aug 1792
Joseph Carter, Senr., of Greene Co. & Territory of US south of river Ohio, formerly North Carolina, one part, and Francis Casteel, formerly an inhabitant of sd. Greene Co., now living S of French Broad river & Territory aforesaid, other part, 150 pounds pd, bordering on & crossing Lick Creek.
Wit:
Levy Carter, Joseph Casteel, David Key


MARRIAGE: TN; Knox Co.; Ancestry.com; Tennessee State Marriages, 1780-2002
3 May 1798 David Castel Sarah Mitchell
Surety: _orris Mitchell

DEED: TN; Greene Co.; Greene County, Tennessee, Deed Abstracts, 1785-1810. Volumes, 2, 4, 6, 7 and 8. Joyce Martin Murray. 1996; Dallas, TX. Page 95
From Greene County Deed Book 1, p. 360
2 Feb 1798
James Mitchel, Shelby Co., KY, of the one part, and Jacob Bowman, Greene Co., TN, of the other part, $400 pd, 200 acre tract on the N side of Lick creek & on a creek known as Little Gap. Tract begins on line of Thomas Baylis (Bayley), adjacent Bay's mountain.
Witness:
Leonard Dell, Jurat.

MARRIAGE: TN; Knox Co.; Ancestry.com; Tennessee Marriages to 1825
6 Jun 1798 Mordicai Mitchell Nancy Casteel

BONDSMAN FOR MARRIAGE: Ancestry.com; Tennessee State Marriages, 1780-2002 (Note that this record shows only the back of the bond, which does add the name of the Surety bondsman, but gives the bride & groom only by first initials and surname
"M. Mitchell & N. Castell
Surety D.Castell (David Casteel)
6th June 1798"

PETITION: TN; Knox Co.; Tennessee State Archives, Petition #27-2-1801-1
"To the Honorable the Legislature of Tennessee
We the Petitioners Humbly Sheweth That the large extant of Knox County renders it very inconvenient for the Citizens residing North of Clinch river to attend at Knoxville. Your petitions prays that Yuor Honorable Body May take it under Consideration to Grant Us a new and distinct County Boundering as follows To Witt Beginning on the Chesnut ridge at the place where the Knox and Grainger line passes the Same, Thence with teh Knox and Grainger line to Clinch river, thence a direct line to the Indian boundary at Cumberland Mountain where the Knox and Gainger line Strikes the Same, thence down sd Boundary line to Emerys river, thence down Said River to the injunction, thence up Clinch river to where the Copper ridge Strikes the Same (near the mouth of Beaver Creek) thence along the eastern higth of said ridge to Henderson & Cos. Survey, thence with the Said Survey to the eastern higth of the Chesnut ridge, thence along said ridge to the Beginning."
The reason of your petitioners praying for a direct line from Clinch river to the Indian Boundary Is because the Eastern higth of the Cross Mountain lan[?] as Mintioned in the Act of Assembly Can never be Accurately Asscertained."
[Page 7 of the signatures only]
Conrad Hussung
James Michel
N. Hackworth
Wm R/Keeth
John Michel
Jesse ?griffin
Burd Keith
Wm. mitchel
Thomas Capshaw
Joshua Christenbury
Peter Key
Austin Chote
James Standefer
Nathan Roberson
thomas Carpenter
Nathan Fulloncings[?]
Stephen Roberson
Pleasent Chitwood
Lasarus Chitwood
David Casteel
Masheck Stephens
Washington Stephens
Jacob Englan
Ausen Choat