From the history of Northam, There to Here by Roy Newcombe:
Thaddus (1860) married Sophia Maria Caldwill of Taunton, Mass., and had two children: Edgar and Clara May.
Groom's Name Theadeus Ellis
Groom's Residence Northam
Groom's Status Bachelor
Bride's Name Marie Coldwell
Bride's Residence Northam
Bride's Status Spinster
Source RG19/s3/ss5: Marriage bonds, 1878
Second marriage was to Jenny Hayward of Miles City, Montana and they had one daughter, Daisy, who died at a young age. This was probably Elizabeth Jane Hayward:
Groom's Name Thaddeus Ellis
Groom's Residence Lot 12
Groom's Status Bachelor
Bride's Name Elizabeth Jane Haywood
Bride's Residence Northam
Bride's Status Spinster
Source RG19/s3/ss5: Marriage bonds, 1886
Third marriage was to Henrietta Hayward, in Montana in 1889. They had five children: Ethel (died young) Charlotte Bell, Pearl (died young), Lester, Henry and Ruth.
Thaddeus was back in Canada for the 1891 census - a single man? - with his daughter Clara, age 8, and then back in the States by 1900. Lottie was born in 1891 - perhaps Henriette had gone to live with her mother and father.
Household in 1900
Thettu? Ellis Head M 40 Canada Eng
Henriette Ellis Wife F 30 Canada Eng
Clara Ellis Daughter F 19 Massachusetts
Lotty Ellis Daughter F 9 Montana
Pearl Ellis Daughter F 5 Montana
Citing this Record "United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MMPX-G9D : accessed 19 February 2016), Lotty Ellis in household of Thettu? Ellis, Cumberland, Eagle Gorge, Hot Springs, Lester, and Durham Precincts, King, Washington, United States; citing sheet 7A, family 157, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm
Name Thadeus Ellis
Event Type Marriage
Event Date 03 Jul 1889
Event Place Ainsley, Custer, Montana
Age 29
Marital Status Widowed
Birthplace Prince Edward Island, Canada
Birth Year (Estimated) 1860
Father's Name Henry Ellis
Mother's Name Clarrisa Glover Ellis
Spouse's Name Henrietta Hayward
Spouse's Age 22
Spouse's Marital Status Single
Spouse's Birthplace Prince Edward Island, Canada
Spouse's Birth Year (Estimated) 1867
Spouse's Father's Name Wm James Hayward
Spouse's Mother's Name Charlotte Boundy Hayward
Citing this Record