Birth Record:
Name: Wm. O. Mossor
Date/place of birth: December 14, 1884, Meade Dist., Tyler Co., WV
Father: D. H. Mossor, farmer, residence Meade Dist.
Mother: Amanda Mossor
Reported by: D. H. Mossor, father

William was living with his half-brother Samuel E. Grim in Holyoke, MA in the 1910 Census.

Likely:
1920 Census, Roane Co., WV
Mosser, William, 35, b. WV, parents b. WV
Henrietta G., wife, 25, b. KY, father b. VA, mother b. WV
Hercel, son, 6, b. WV
Irene, dau., 4, b. WV
Juanita, dau., 2, b. WV
Edith, dau., 1y 1m, b. WV

1930 Census, Spencer, Roane Co., WV
Mosser, William O., 45, b. WV, parents b. WV
Henrietta C., wife, 35, b. KY, father b. VA, mother b. WV
Hercil, son, 16, b. WV
Irene, dau., 14, b. WV
Juanita, dau., 13, b. WV
Edith, dau., 11, b. WV
Warren, son, 9, b. WV

Death record confirms him as son of David Mossor and Amanda Jane Hanlin.


Obituary, The Asheville Citizen (Asheville, NC), Tuesday, May 27, 1941, p. 9:

Mossor Funeral Rites Held In Hendersonville

Hendersonville, May 26, (Special)—Funeral services for William O. Mossor of Port Orange, Fla., and Hendersonville, were held at the Thomas Shepherd Memorial chapel here at 2 o’clock Monday afternoon.

Mr. Mossor, a native of West Virginia, died at his home near here Friday after being in ill health for sometime. The Rev. B. E. Wall, pastor of the First Baptist church conducted the services.

Pallbearers were local Masons, who also conducted a short service at the grave. They were N. C. Foster, Louis Sherman, C. Few, L. R. Geiger, Sidney E. Powers, and H. H. Bangs.

Surviving are the widow, Mrs. Henrietta C. Mossor; five children, Hercel and Warren Mossor, of Camden, S. C.; Mrs. Irene Mossor McKibben, Fort Mill, S. C.; Mrs. Juanita Osborne and Mrs. Edith Biggers, of Charlotte; and two brothers, T. H. Mossor, of Park[er]sburg, W. Va., and Frank Mossor, of Point Pleasant, W. Va.

**Note: T. H. Mossor could be a typo for A. H. Mossor (Alfred Homer). I have no record of a brother with a name beginning with T.