There is a Humphrey Pigman buried in Pine Hill Cemetery with death date 10 Aug 1897 and inscribed as “age 78 years” (no birth date listed), who may be this Humphrey. There is no other Humphrey Pigman listed in the 1880 census of Rowan County, and none at all in the 1900 census, and no other Humphrey Pigman burial listed in Rowan County. There are two problems with that identification, though. The first is that an age of 78 in 1897 would imply a birthdate aound 1819, which is 8 years older than that implied for this Humphrey in the 1850 and 1860 census. The second problem is that the Humphrey in Pine Hill Cemetery is buried under a double stone with a wife Gladys who died 20 Aug 1890, aged 68 at the time, implying a date of birth around 1822. There is no Elizabeth Pigman buried in Rowan County. It is somewhat unlikely that Elizabeth and Gladys are the same person, since she was consistently listed as Elizabeth in her marriage record and three censuses. So either the Humphrey Pigman buried in Pine Hill Cemetery is a different person who arrived in Rowan County after 1880, during which time this Humphrey and Elizabeth moved away, or, if they are the same person, the age at death is wrong by 7 or 8 years and Humphrey remarried to a Gladys before he died.

1850 census of Letcher Co., Ky, p. 152a, records as family #126:
Pigman, Umphry, 23; Elizabeth, 20; Mariah, 2; John B., 2/12. All born in Ky.

1860 census of Letcher Co., Ky, p. 747, records as family #504:
Pigman, Umphrey, 32, farm laborer; Elizabeth, 31; Mariah, 10; Wesley, 10; Marinda, 6; Rosa, 4; Hiram, 2; Marion, 2/12. All born in Ky.
(The age for Mariah is off by 2 years - she was recorded as 2 in 1850 and 22 in 1870. Wesley age 10 is probably the same person as John B. age 2/12 in 1850. Humphrey’s father was named John Wesley, so it would be a natural name for a first son, and Wesley’s gravestone says that he was born 28 Jun 1850. On the other hand, there is a son John age 6 in 1870 and age 16 in the 1880 census. It is unusual to give two children the same name unless one of them died very young. So another possibility is that John B. died shortly after the 1850 census, and Wesley was really born in 1851. But most likely they just started calling their first son Wesley so consistently that they considered the name John available.)

1870 census of Rowan Co., Ky, Morehead precinct, p. 112B, lists as family #12:
Pigman, Humphrey, 47, farmer; Elizabeth, 39; Maria, 22; Marinda, 17; Rose, 15; Hiram, 13; Marion, 11; Margaret, 9; John, 6; Mary, 4, Ella, 1/12, b. Apr. All born in Ky.

1880 census of Rowan Co., Ky, Morehead precinct, lists as family #25:
Pigman, Humphry, 57, stonemason; Elizabeth, 50, wife; Hiram, 22, son; Marion, 19, son; Polley, 14, dau; John, 16, son; Elizabeth, 10, dau; Kitchen, W. J., 20, mechanic; Sarah A., 15, wife. Sarah born Va Va Va, all others Ky Ky Ky.