I am not related. His name was Joshua Cory/Corey Greenwalt and he possibly had a brother named John Oliver Greenwalt.

Name: Joshua Cory Greenwalt
Spouse's Name: Eleanor Groves
Event Date: 18 Oct 1849
Event Place: Harrison,Ohio
Indexing Project (Batch) Number: M51434-1 , System Origin: Ohio-ODM , GS Film number: 0894637 V. A-C
"Ohio, County Marriages, 1789-1997," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XZCB-7PX : accessed 22 Oct 2014), Joshua Cory Greenwalt and Eleanor Groves, 18 Oct 1849; citing Harrison, Ohio, United States, reference v C p
599; FHL microfilm 894637.

1830-1850 Washington, Harrison, OH
Abraham Groves 1790-1800 Maryland
Susanna and/or Margaret Groves 1810 PA
James Groves 1829 OH
Sarah Ann Groves 1832 OH married Wm Williams 05 Sept 1856
Samuel Groves 1835 OH

24 Sept 1850 Washington, Harrison, OH
J C "Greenwatt" 1824 PA
Mary E "Greenwatt" 1826 OH

1850 Perry, Tuscarawas, OH
John Oliver G Greenwalt 1826 PA married 02 Dec 1846 Harrison Co
Hannah L PACKER Greenwalt 1825 PA
John S Greenwalt 1847 OH
Joshua C Greenwalt 1849 OH

1860 Washington township, Harrison, OH
Abram Groves 1800 Maryland
J C "Greenwault" 1828 PA
Ellen Greenwault 1830 OH
Wm C Greenwault 1850 OH
A F Greenwault 1852 male
J C Greenwault 1854 male
S T Greenwault 1856 male
J O Greenwault 1859 male

1870 Washington, Harrison, OH
Joshua C Greenwalt 46 Ohio farm laborer
Mary E Greenwalt 44 Ohio
William C Greenwalt 19 Ohio
Abraham Fredrick Greenwalt 18 Ohio 15 Oct 1851/1852-04 May 1936 Green twnship, Fayette Co OH wife Melissa
James C Greenwalt 16 Ohio
Samuel T Greenwalt 14 Ohio
John O Greenwalt 10 Ohio
Thomas H Greenwalt 7 Ohio
Elisabeth A Greenwalt 1 Ohio

1870 Washington, Harrison, OH
John J Dickerson 28 Ohio married 26 Sept 1867 Harrison Co
Cyntha E "Crumley" Dickerson 22 Ohio
Harry Dickerson 1 Ohio
Dickerson Male 1/12 Ohio
Emmet Belknap 12 Ohio
Joshua C Greenwalt 21 Ohio 1849

1870 Freeport, Harrison, OH
Hannah Greenwalt 1826 PA
Selethial Lewis Greenwalt 1859 OH

1880 Freeport, Harrison, OH
Hannah Greenwall 1824 PA widow
Lewis Selethial Greenwall 1859 OH single son - Selethial L Greenwalt 11 May 1859 - 07 May 1921 New Philadelphia, Tuscarawas Co; never married, parents unknown, Mrs. C Greenwalt of New Philadelphia informant. He was buried East Avenue Cemetery.

Lewis Greenwalt lived in Goshen, Tuscarawas Co 1920 census with widowed sister in law Ella M Greenwalt born OH 1868 who was married to Isaac Greenwalt born 19 Sept 1852 and died in
Tuscarawas Co 18 May 1914. His death certificate says father was John Greenwalt. He was buried at East Avenue Cemetery as was Ella M Greenwalt 1867-1936

1880 Freeport, Harrison, OH
John Greenwall 1848 OH - John L Greenwald married 28 Aug 1869 Tuscarawas Co
Mary MILLER Greenwall 1848 OH
Lewis C Greenwall 1871
Oliver M Greenwall 1876

1880 Salem, Tuscarawas, OH
Joshung Greenwalt 1824 PA or OH parents OHIO works on farm
Mary E Greenwalt 1826 OH
Elisabeth H Greenwalt 1869 OH dtr
Mary M Greenwalt 1873 OH dtr

Saml Greenwalt 1857 OH parents PA

1880 Rush, Tuscarawas, OH
Benj F Sanders 1856 OH
Alferetta J Sanders 1860 OH
Thomas Greenwald 1863 OH married 13 Feb 1904 Fayette Co OH to Julia Bogg born appx 1874 dtr of James Swift and Mary Tach. Thomas Greenwalt then married 22 Sept 1906 in Fayette Co to widow Nellie Poor. Possible marriage in Pike Co 05 Nov 1884 to America Vanmeter then Mary E Vanmeter 02 Mar 1893; he had sons Charley Greenwalt in 1885 and Thomas N Geenwalt 1892.

1880 Union, Tuscarawas, OH-1900 Dover township/Canal Dover village, Tuscarawas OH
William Greenwalt June 1850/1851 OH parents OH widowed 1894 married Tuscarawas Co 30 Sept 1875
Cassander/Cassandra Catherine FOWLER Greenwalt 1853 OH died 09 Nov
1894 Uhrichsville, Mill township, Tuscarawas Co burial unknown
James T Greenwalt Oct 1877 married Nettie J Jacquett 12 Apr 1903
John E W Greenwalt Feb 1880 married Emma Lena Weber 21 June 1905
Zelia/Jella I Greenwalt Jul 1884 married David B Sullinger 22 Dec 1904
Ida/Iva E Greenwalt Aug 1887
Geo Elias/Eli Greenwalt 05 Feb 1891 Union/Urichville, Tuscarawas Co moved to Toledo, Lucas Co wife Eunice Julia Clark

1880 Idaho, Pike, Ohio
Abraham Greenwalt 1852 married 17 Dec 1877 Pike Co
Malissa "WALLS" Greenwalt 1857 OH
Wm A Greenwalt 1879

1900 Freeport, Harrison, OH
John L Greenwalt Oct 1847 OH said parents born OH married 3 Oct 1888 Harrison Co
Eliza STEADMAN Greenwalt May 1855 OH
Ray/Roy D Greenwalt May 1892
Eliza Steadman May 1810 VA mother in law

Name: Thomas Greenwalt
Event Type: Marriage
Event Date: 22 Sep 1906
Event Place: Fayette, Ohio, United States
Age: 40
Birth Year (Estimated): 1866
Father's Name: Cory Greenwalt
Mother's Name: Mary Groves
Spouse's Name: Nellie Poor
Spouse's Age: 31
Spouse's Birth Year (Estimated): 1875
Spouse's Father's Name: Dowden
Spouse's Mother's Name: Mary Clem
Reference ID: volume 7 , GS Film Number: 292634 , Digital Folder Number: 004016246 , Image Number: 00482

1900 Union Township, Fayette Co Ohio
Fayette Co childrens home
Alice Greenwalt Oct 1895
Edith Greenwalt Dec 1890
John Greenwalt Feb 1893

Joshua L Roller 12 Sept 1855 Washingtonville, OH-11 Dec 1924 Youngstown, Mahoning Co father Joseph Roller mother Mary Ann Greenwalt born PA 1830-1831 dtr of John Greenwalt born PA 1789-1790 and Elizbeth born PA 1791-1792.

Mary Ann Greenawalt married Joseph Roller in Columbiana Co OH 12 Dec 1850 and they lived in Columbiana Co OH in 1850 census.

John Greenawalt 1790 PA
Elizabeth Greenawalt 1797 PA
Mary A Greenawalt 1831 PA
Abraham Greenawalt 1834 PA

1870 Green, Mahoning, Ohio
Joseph Roller 40 Ohio
Mary A Roller 39 Pennsylvania
Wm E Roller 18 Ohio
Joshua L Roller 14 Ohio
Emma E Roller 9 Ohio
Deborah Gnutt 24 Pennsylvania
J Greennewalt 80 Pennsylvania
Elizabeth Greennewalt 78 Pennsylvania

"Ohio, County Marriages, 1789-1997," index and images,
FamilySearch (https://familysearch.org