Marriage:
William Henry Adams, 24 b Windenham, soldier, s/o William Perry Adams and Margaret Propper married Alice Katherine Jennings, 21, b Goor Hill England, d/o Albert Jennings & Lillie Taggard, witn: John Henry Thompson and Elizabeth Leffler both of Simcoe Norfolk County, 6 March 1916 Town of Simcoe Norfolk County.
Births are only released to 1914 on line but there may be children listed on 1921 census.
1921 census Simcoe Town Norfolk
ADAMS
Harry, 29, b Ont, labourer, parents b Ont
Alice, 25, b Ont, father b England, mother b Ont [marriage rego says b England]
Nellie, 4, b USA, immigrated 1920, parents b Ont
Lilian, 1, b USA, immigrated 1920
Charles Jennings, 20, Ont
Cecil Jennings, 16
Stella Jennings, 11
Andrew Jennings, 3
All the Jennings b Ont, father b England, mother Ont.
The Jennings must be visiting as they are listed as living at a different address from the Adams family but they are listed as sons and daughter.
Don't see them listed on 1920 US census.
1921 census is last one released in Canada.
There is a Family Tree on Ancestry.
Birth:
William Harry Adams, b 5 Dec 1891, s/o William Perry/Percy Adams and Margaret Proper. Windham Norfolk.
WW1 Attestation papers
Harry Adams, b 5 Dec 1891 Windham Ont, laborer, next of kin: Perry Adams of Simcoe Ont. He signed up at Simcoe 3 Feb 1916.
He is also listed as being in the US Army. Signed up in Detroit. Dates are 1917-1918. It is only an index but birthdate and birth place are the same. Maybe he was given a discharge from Canadian Forces and reenlisted in US. That's why daughters were born there.
1901 census Simcoe Norfolk
ADDAMS
William P, 20 Dec 1858, Ont
Marget, 9 Aug 1855, Ont
Daniel H, 19 Mar 1885
James A, 23 Jul 1886
William H, 1 Dec 1891
John H, 19 Nov 1898
Annie B Thompson, daughter, 30 Nov 1888
George Differ/Biffer son in law, 28 Jun 1880
Catherine E, wife, ? Aug 1882
Earney, son, 19 Dec 1900
Marriage
WIlliam Perry Adams,26, s/o John and Sarah A Adams, married Margrett Proper, 21, d/o Wm N Proper & Rebecca Proper, 19 Jan 1878, witn: Henry & Mary Jane Finch both of Houghton Tsp. Houghton Tsp. Registration # 43274.
On 1871 census Charlotteville Norfolk South, there is a William P Adams, 19, is with Sarah Ann Carl and Stephen Carl. Siblings: Ida C Adams, 16, Mary Ann Adams 13. All born Ontario except Sarah who was born 'at sea'.
Find A Grave Simcoe Norfolk, Oakwood Cemetery
William H Adams 1891 - 1976
Alice E Adams 1896-1965
Death:
WIlliam Perry Adams, b 20 Nov 1843 Norfolk Ont, s/o James Adams & Sarah Annie Carl, died 18 Mar 1923 of senility/myocarditis. Informant: wife Mrs L Adams of Simcoe Ont. Burial: Oakwood Cemetery.
On sister Ida's death rego it gives parents as William Adams and Sarah Ann Carl both b US.
On Sarah Ann Carl's death rego it gives birthplace as Pennsylvania US and parents as Peter Myers and Catherine Brandon.