2/2/1782: Married to Mary White in Pittsylvania Co., VA.
Reportedly had 5 children. I've only been able to identify 2 of these.

4/13/1790: Married Margaret Moon. They had a total of 18 children.

1820 Federal Census for Jackson Co., GA, Page 302, Line 11:
John Pearce
3 males - 0 through 9 - (
2 males - 10 through 15 - (Joshua, b. 1808, Shadrack, b. 1808)
1 male - 16 through 25 - (David, b. 1804,)
1 male - 45 and over (John)
2 females - 0 through 9 - (Nancy, b. 1813, Frances, b. 1814, Rachel, b. 1815)
1 female - 10 through 15 - (Louisa, b. 1809)
1 female - 16 through 25 - (Susannah, b. 1804)
1 female - 45 and over (Margaret)

1830 Federal Census for Fayette Co., GA, Page 193, Line #5:
John Pearce
2 males - ages 15 through 19 - (Joshua, b. 1808 & Shadrack, b. 1808)
1 male - age 20 through 29 - (Elisha, b. 1804)
1 male - age 70-80 - (John, b. 1760)
1 female - age 60-70 - (Margaret, b. 1774)

1840 Federal Census for Meriwether Co., Ga, Page 127, Line # 7:
John Pearce
1 male - age 80-90 (John);
1 female - age 60-70 (Margaret);
Slaves:
2 male - age 10-24;
1 female - age 10-24.

LAST WILL AND TESTAMENT OF JOHN PEARCE - FAYETTE CO. GA
AUGUST 9, 1854
GEORGIA - FAYETTE COUNTY
IN THE NAME OF GOD AMEN, I JOHN PEARCE OF THE COUNTY AND STATE OF AFORESAID, BEING OF ADVANCED AGE AND KNOWING THAT I MUST SHORTLY DEPART FROM THIS WORLD, DEEM IT RIGHT AND PROPER, BOTH AS RESPECT MYSELF AND MY FAMILY, THAT I SHOULD MAKE A DISPOSITION OF THE PROPERTY WITH WHICH A KIND PROVIDENCE HAS BLESSED ME. I THEREFORE MAKE THIS LAST WILL AND TESTAMENT, HEREBY REVOKING AND ANNULLING ALL OTHERS HERETOFORE MADE BY ME.
ITEM 1. I DESIRE AND DIRECT THAT MY BODY TO BE BURIED IN A DECENT AND CHRISTIAN LIKE MANNER, SUITABLE TO MY CIRCUMSTANCES AND CONDITION, MY SOUL I TRUST SHALL RETURN
TO REST WITH GOD WHO GAVE IT, AS I HOPE FOR ETERNAL SALVATION THROUGH THE BLESSED LORD AND SAVIOUR JESUS CHRIST.
ITEM 2. I DESIRE AND DIRECT THAT ALL MY JUST DEBTS BE PAID WITHOUT DELAY BY MY EXECUTORS HEREINAFTER NAMED, AS I AM UNWILLING MY CREDITORS SHOULD BE DELAYED OF THEIR RIGHTS, ESPECIALLY AS THERE IS NO NECESSITY FOR DELAY.
ITEM 3. I DESIRE AND DIRECT THAT MY EXECUTORS HEREINAFTER NAMED SHALL SELL AND DISPOSE AT PRIVATE SALE MY NEGROE BOY GREEN ABOUT 34 YEARS OF AGE AND ALSO ALL THE NOTES WHICH ARE IN MY POSSESSION TO BE COLLECTED AS PRACTICABLE BY MY SAID EXECUTORS, WHICH PROCEEDS OF SAID NEGROE, AND SAID NOTES TO BE EQUALLY DIVIDED AMONG MY THIRTEEN CHILDREN, VIZ:
SARY KELLY (daughter from first marriage); JOHN PEARCE; SHADRACK MORRIS (husband of deceased daughter, Elizabeth); AND THE CHILDREN OF MY DECEASED DAUGHTER MARY KEMP (should be Camp), AND THE CHILDREN OF MY DECEASED SON JAMES (James Perry Pearce); SHADRACK PEARCE; JOSHUA PEARCE; ELIJAH PEARCE; ELISHA PEARCE; SUSANNAH MARTIN, WIFE OF IRA L. MARTIN, AND HER CHILDREN FREE FROM THE DISPOSITION OF HER PRESENT HUSBAND, AND THE CHILDREN OF MY DECEASED DAUGHTER NANCY WHITAKER; RACHEL PATE, WIDOW OF WILLIAM PATE, DECEASED, AND LEWIS PEARCE (son from first marriage).
ITEM 4. THE REST OF MY CHILDREN VIZ: WILLIAM PEARCE, AXUM (Axom) PEARCE, DAVID PEARCE, MY SON IN LAW HAMLIN D. MATTYSE (widow of deceased daughter Ollie, Hollie or Holley and should be Maddox), HAVING HAD THEIR FULL SHARE OF MY ESTATE, I DEVISE THEY HAVE NO FURTHER INTEREST IN MY ESTATE.
ITEM 5. I CONSTITUTE AND APPOINT MY SON JOSHUA PEARCE AND JOHN J. WHITAKER (believed to be Nancy's brother-in-law) MY EXECUTORS TO THIS MY LAST WILL AND TESTAMENT.
HIS
/S/ JOHN X PEARCE
MARK
SIGNED, SEALED, DECLARED AND PUBLISHED BY JOHN PEARCE AS HIS LAST WILL AND TESTAMENT IN THE PRESENCE OF US THE SUBSCRIBERS, WHO SUBSCRIBE OUR NAMES HERE UNTO, IN THE PRESENCE OF SAID TESTATOR, AND OF EACH OTHER THIS AUGUST 9, 1854.