Is this your grandfather on the Social Security Death Index??
Name:C. Yarber Birth:30 Nov 1933 Death:15 Nov 1989 - Chicago, Cook, Illinois, United States of America Civil:Mississippi
If you give more information on locations and dates of birth, marriage, and burial, perhaps someone can help you.
You should be advised that the Yarber name is just one of the many variations of Yarborough/Yarbrough, etc. Census takers spelled names as they thought they heard them pronounced.
The 1930 census has trhis Yarber family living in Lafayette Co MS Name: Hardy Yarber Home in 1930: Beat 3, Lafayette, Mississippi Age: 53 Estimated Birth Year: abt 1877 Birthplace: Mississippi Relation to Head of House: Head Spouse's Name: Letty A Race: Negro (Black) Household Members: Name Age Hardy Yarber 53 Letty A Yarber 41 Magnolia Yarber 22 Clennie Yarber 18 Bessie M Yarber 15 Rosa B Yarber 13 Estella Yarber 12 Gallie Thompson 9 Silvester Thompson 6 Evans Thompson 3