Oregon
| Gilliam County |
Census Year: 1900
| Name | Age | Sex | Race | Date of Birth | Relation | Place of Birth |
| William B. Pentecost | 37 | M | W | June 1862 | Head | South Dakota |
| Malissa Pentecost | 18 | F | W | Feb. 1882 | Wife | Ohio |
| William J. Pentecost | 2/12 | M | W | March 1900 | Son | Oregon |
| Lillie M. Pentecost | 13 | F | W | April 1887 | Niece | Oregon |
| Albert Pentecost | 17 | M | W | Sept. 1882 | Nephew | Oregon |
| County |
| Union County |
Census Year: 1900
| Name | Age | Sex | Race | Date of Birth | Relation | Place of Birth |
| Ingham W. Pentecost | 56 |
M | W | Jan. 1844 | Head | New York |
| Ida Pentecost | 24 |
F | W | Nov. 1875 | Daughter | South Dakota |
| Norman Pentecost | 17 | M | W | 1882 | Son | Oregon |
| Lillie Pentecost | 15 | F | W | Sept. 1884 | Daughter | Oregon |
| Nellie Pentecost | 9 |
F | W | May 1891 | Daughter | Oregon |
Census Year: 1900
| Name | Age | Sex | Race | Date of Birth | Relation | Place of Birth |
| Phillip J. Pentecost | 42 |
M | W | Dec. 1857 | Head | Iowa |
| Nellie Pentecost | 32 |
F | W | Jan. 1868 | Wife | Pennsylvania |
| Katie Pentecost | 13 |
F | W | Oct. 1886 | Daughter | Kansas |
| Sarah Pentecost | 9 |
F | W | Oct. 1890 | Daughter | Washington |