I have not found George in the 1900 census. He was not listed with his parents, and was probably out working somewhere. Identification as a son of Robert Link is based on the 1910 census.

In 1910 George and his brother Eddie were both listed as age 24, in separate households, so I do not know whether they were twins, or which one was older, if they were not.

1910 census of Morgan Co., Ky, Panthers Branch precinct, enumerated 16 April, lists on p. 1A as family #4:
Link, George, 24, farmer; Ivory, wife, 14, married 1 year, no children; Robert L., father, 64, widowed. All born Ky Ky Ky.