I did some Googling and found this:
http://www.offutt.rocks/p18.htm#i582
Father James Offutt b. 14 Oct 1725, d. 25 Jul 1802
Mother Rebecca Magruder b. 22 Feb 1725, d. 12 Jun 1810
Reference B-2-5
Last Edited February 25, 2006
Jane Offutt was born on July 13, 1752 at Frederick County, MD, USA.1,2,3 She was born on July 31, 1752 at Frederick County, MD.4,5 She married Mordecai Burgess Offutt, son of Samuel Offutt and Elizabeth Burgess, on April 7, 1774 at Frederick County, MD.6,7,8,5 Jane Offutt was mentioned in the will of James Offutt on July 20, 1802 at Montgomery County, MD, USA.9,10 Jane Offutt died in 1805. She died on July 6, 1806 at Montgomery County, MD, USA, at age 53.11,4,3,5
Family
Mordecai Burgess Offutt b. 25 Jan 1744, d. 7 Mar 1814
Children
Elizabeth Offutt+ b. circa 1765, d. 1835
Jane Offutt+4 b. circa 1778, d. between 1821 and 1840
Rebecca Offutt+ b. circa 1780
Cassandra Offutt+ b. circa 1781, d. before 1821
Verlinda Offutt+ b. circa 1783, d. October 15, 1849
Sarah Offutt+ b. circa 1785
Colmore Offutt+ b. February 6, 1787, d. February 7, 1855
Mary Offutt b. circa 1789
Clarissa Offutt+ b. circa 1790, d. circa February, 1851
Citations
[S15] International Genealogical Index (IGI), Pg. 5,737. Had date of birth and county.
[S36] Church of Jesus Christ of the Latter Day Saints, "Ancestral File Records", Ancestral File, Number CQKV-X7.
[S979] Daughers of the American Revolution, Linda Dianne (Diederick) Beall, 708541, Application filed Apr. 6, 1987, Referenced DAR app. # 289525, Will, and Bible Records.
[S978] Daughers of the American Revolution, Shirley May (Merchant) Ennis, 732085, Application filed Jun. 19, 1990.
[S981] Daughers of the American Revolution, Connie Sue Schroeder, Connie sent the family information only, no filing information was included, Lists this date, and has county and state place information. Probably taken from earlier DAR applications.
[S36] Church of Jesus Christ of the Latter Day Saints, "Ancestral File Records", Ancestral File, Had circa 1775, removed date based on DAR application.
[S978] Daughers of the American Revolution, Shirley May (Merchant) Ennis, 732085, Application filed Jun. 19, 1990, Provided full date and place information.
[S979] Daughers of the American Revolution, Linda Dianne (Diederick) Beall, 708541, Application filed Apr. 6, 1987, Referenced DAR app. # 289525, Will, and Bible Records. Had date of marriage as c 1775. Date not used.
[S2] Nelle (Offutt) Chesley, The Offutt Family, Book II, Pg. 96. Will found in Liber D, folio 584.
Beloved wife, Rebecca (Magruder)
Three beloved sons, William Offutt, Zadok Offutt, Ozias Offutt:
All that tract called 'Clewerwall' or 'Clerewall Enlargened' "which I now have in my possession" and "all the Right of a Tract of Land I purchased of David Low, Ninian Willett and Others, called 'Hensley' and 'Addition to' Hensley' to be equally divided".
To son William, 1 negro boy named Ninian
To son Zadok, 1 negro boy named Dick
To son Osias, 1 negro boy named Jack
The above negroes to sons after death of wife, Rebecca.
To daughters, Jane Offutt, Volinder Offutt, Rebecca Offutt, Mary Offutt, the children of Elizabeth Jones
"Also to daughters after the death of my wife, all money due from Philip Sholer for land and mill sold to said Sholer"
To children, William Offutt, Zadok, Offutt, Ozias Offutt, Jane Offutt, Volinder Beatty, Rebecca Offutt, Mary Offutt, and Elizabeth Jones heirs, one tract called 'Fair Dealing' on the Potomack River.
Executor: Ozias Offutt "whole and sole executor"
Witness: Hilleary L. Fisher, Kinsey Gittings, Jesse Wade, James Wade.
[S261] James C. Sween, Janet D. Manuel Mary Gordon Malloy, Wills, Montgomery Cty., MD 1776-1825, Pg. 101. Liber D, folio 584.
[S2] Nelle (Offutt) Chesley, The Offutt Family, Book II, Pg. 190. Had county and state.
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So that indicates she was an Offutt by birth and also married an Offutt. The only mention of the Colmore name is she had a son named:
Colmore Offutt+ b. February 6, 1787, d. February 7, 1855
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