Hello Janette.
Certainly William E Gibson was the son of George H Gibson and Mary Cary.
He was the brother of Lillian Rosella Gibson.
The 1880 Census record in the first answer by Frank is the right one.
Household |
Role |
Sex |
Age |
Birthplace |
George Gibson |
Self |
M |
27 |
Canada |
Mary Gibson |
Wife |
F |
22 |
Canada |
William E Gibson |
Son |
M |
3 |
Maine, United States |
Baby Gibson |
Son |
M |
0 |
Maine, United States |
Citing this Record
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MF3N-X8Z : 14 August 2017), Baby Gibson in entry for George Gibson, 1880; citing enumeration district ED 209, sheet 266B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d), roll 0476; FHL microfilm 1,254,476.
As can be seen in the 1900 Census, the unnamed baby boy Gibson listed in the 1880 Census was named Wilmet and was born on March 1880. He is listed in line no. 96 in the census schedule (see the original document).
Household |
Role |
Sex |
Age |
Birthplace |
George H Gibson |
Head |
M |
50 |
Canada E |
Mary Gibsen |
Wife |
F |
39 |
Canada E |
Wilmet Gibsen |
Son |
M |
20 |
Maine |
Rose Gibsen |
Daughter |
F |
18 |
Maine |
Citing this Record
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M93D-NYV : accessed 31 July 2019), Rose Gibsen in household of George H Gibson, Thief River Falls city, Red Lake, Minnesota, United States; citing enumeration district (ED) 331, sheet 6B, family 117, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,782.
Lillian Rosella is listed as Rose in line no. 97. By mistake, she is said to have been born on Sep 1882. Lillian Rosella was born on Sep 1885 in the very same place where the family was living in the 1880 Census: Washburn, Aroostook Co., ME.
Name: Lillian Rosella Gibson
Event Type: Birth
Event Date: 10 Sep 1885
Event Place: Washburn, Aroostook, Maine, United States
Father's Name: George Gibson
Mother's Name: Mary Cary
Citing this Record
"Maine Vital Records, 1670-1921," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:2HKB-4D1 : 3 November 2017), Mary Cary in entry for Lillian Rosella Gibson, 10 Sep 1885; citing Washburn, Aroostook, Maine, United States, Division of Vital Statistics, State Board of Health, Augusta; FHL microfilm.
William E, Wilmet and Lillian Rosella, the three of them, were siblings.