I found some information on the siblings of your Vincent Lee Glover:
from Hendricks County Deaths with Burials in County, 1882-1990:
--Glover, Joseph H. b. 1870/11/05 in IN, d.1927/09/05 in Hendricks County, parents John Glover & --- Pharo
--Cooper, Sina M. b. 1875/12/31 in IN, d.1947/03/03 in Hendricks County, parents John Glover & Sarah --
--Alison, Sylvia b. 1903/03/10 in IN, d.1982/05/26 in Hendricks County, parents Flavius Cooper & Sina Glover
--Cooper, Flavius G. b. 1863/01/16 in IN, d.1938/05/12 in Hendricks County, parents Shelby Cooper & Martha Rynerson
from WPA Index to Marriages in Hendricks County (1850-1920):
--Glover, James to Catharine Whitehead Dec 22 1893
--Glover, Joseph H. to Lena L. McCloud Mar 23 1905
--Glover, Sina May to Flavins G. Cooper Sept 19 1894
from WPA Index to Marriage Supplements for Hendricks County (1882-1920):
mother: Harriet Feyroe
age at next birthday: 22
date of marriage: Dec 22 1893
mother: Harriet Ford
age at next birthday: 19
date of marriage: Sept 19 1894
from The Plainfield Messenger, issue of 3/6/1947, page 1 column 3:
MRS. SINNA COOPER
Funeral services were held on Thursday morning at 10:00 o'clock at Plainfield Nazarene church, for Mrs. Sinna Cooper, age 71, who passed away on Monday night at the home of her daughter, Mrs. Percy Alison, in Plainfield.She was a member of the Nazarene church.Rev. Dawes was in charge of the service.
Mrs. Cooper was the daughter of John and Sarah Glover, deceased of Clayton.She was the mother of Mrs. Sylvia Alison of Plainfield, Roy Cooper of Kankakee, Ill., Wayne Cooper of Kankakee, Ill., and Floyd Cooper of Martinsville.Burial was in Stilesville cemetery.
from The Plainfield Messenger, issue of 5/9/1940, page 8 column 3:
Funeral Saturday At Clayton for Mrs. Rosa Haworth
Funeral services were held at the Clayton Presbyterian church Saturday morning, May 4, at 11:00 o'clock for Mrs. Rosa Haworth, age 72, formerly of Clayton, who died suddenly Wednesday afternoon, May 1, at the home of her daughter, Mrs. Esther Raber, at Colfax, Ind.
The Christian church pastor at Colfax conducted the service.Burial was in the Clayton cemetery.
Mrs. Haworth is survived by the daughter, Mrs. Raber; a son, Prof. D.A. Haworth, Sioux City, Iowa; six grandchildren; a sister, Mrs. Sina Cooper of Plainfield; and a niece and nephews including Wayne and Floyd Cooper and Mrs. Percy Alison, all of Plainfield.
She was born at Clayton, where her home had been most of her lifetime.The last few years she had lived at the homes of her daughter and her son.She was the widow of Garah Haworth.She was a member of the Clayton Presbyterian church.
from The Plainfield Messenger, issue of 9/8/1927, page 1 column 3:
JOE GLOVER DIED MONDAY
Joseph L. Glover, age 56 years died at his home in Clayton Monday evening after four and a half weeks illness following a stroke of paralysis.The funeral was held on Wednesday afternoon from the Baptist church with burial in Clayton Cemetery.He had been blind for many years and despite this affliction was of the most cheerful disposition.He is survived by the wife, three brothers and two sisters.
from The Plainfield Messenger, issue of 5/19/1938, page 8 column 1:
Flavius Cooper Rites Saturday; Dies Thursday
Funeral services were held Saturday afternoon for Flavius Cooper, age 74, of Plainfield at the Plainfield Nazarene Church with Rev. J.G. Wire pastor of the church conducting a short service of scripture reading, a prayer, and songs by Wm. Guyer, prefacing a service at the Cherry Grove Methodist Church.Rev. Wire officiated also at this service.
Mr. and Mrs. Clarence Cooper, cousins of the deceased, sang several songs.Burial was in the Stilesville cemetery.
Mr. Cooper is survived by the widow, Mrs. Sina Cooper, the daughter, Mrs. Percy Alison and sons, Wayne and Floyd all of Plainfield; and a son, Roy of Hammond, Ind.; ten grandchildren, two sisters, Mrs. Enos Hutchens, Plainfield and Miss Eva Cooper of near Clayton; brothers Fred, Frank, Alfred and Hugh of Clayton, and Charles of Freedom, Ind., all of whom attended funeral services.
Mr. Cooper was the son of Rev. Shelby and Martha Cooper.He was born January 16, 1864 near Clayton.Most of his life was spent near Clayton, he having moved to Plainfield about two years ago.
He was the oldest of a family of fifteen children, seven of whom have passed on.Mr. Cooper was a musician, having been accomplished in playing various instruments.He directed a band, for a number of years, composed of ten of his brothers, and conducted a music store in Clayton.He was associated for a time with Walter Coble in business in Clayton.Mr. Cooper was in attendance at a mid-week service, Thursday night, May 12, at the Plainfield Nazarene Church when death came from a stroke, just after he had offered a beautiful testimony standing with his Bible in his hand.
from Generations Archives: Indiana Vital Records Marriage Index CD:
--Glover, James O. (born 4/26/1872) to Lottie Phillips (born 8/25/1873) on 12/18/1911 in Marion County
from The People's Guide: A Business, Political and Religious Directory of Hendricks Co., Ind. (1874):
occupation: plasterer and contractor
born in Ky. 1828; settled in Hendricks County 1845
political affiliation: Republican
religious affiliation: M. Baptist
I was unable to find John Glover in either the 1850 or 1860 Hendricks County census, despite this directory entry--the earliest I found him was the 1870 Hendricks County census.
Note that there is also in this directory under Liberty Township a James Glover born in Ky. 1813 and living 3 miles southwest of Clayton.He settled in Hendricks County in 1830.He may be a brother or cousin to your John.