1900 Census info for Frederick, Jane, and children is here:
http://ftp.rootsweb.com/pub/usgenweb/oh/cuyahoga/census/1900/ed069/ed069p02.txtListings for Frederick & John in 1900 City directory here:
http://distantcousin.com/Directories/OH/Cleveland/1900/Pages.asp?Pages=11341910 Census Cleveland, Ohio 1048 East 70th Street N.E.
Wadelin, Frederick H., age 52, married once for 33 years, born England, parents born England, immigrated 1888, alien, occupation: engineer, stationary industry
wife Jane, age 52, married once for 33 years, born England, parents born England, immigrated 1888, no occupation
daughter Nellie E., age 15, single, born Ohio, attending school
son Benjamin A., age 17, single, born Ohio, attending school
1920 Census, Cleveland
Wadelin, Fred H., owns home with a mortgage, age 63, married, immigrated 1888, naturalized 1894, born England, parents born England, occupation - engineer, Temple
wife Jane, age 63, married, immigrated 1888, naturalized 1894, born England, parents born England, no occupation
daughter Nellie E., age 25, single, born Ohio, parents born England, bookkeeper for real estate office
Jane M. Wadelin died 28 Dec 1927 in Cleveland, Cuyahoga County. If you sign up here:
http://labs.familysearch.org/ you can see her death certificate for free. There is also a death certificate for Frederick, who died 11 Jun 1937 in Euclid, Ohio. Also there is a death certificate for Jane and Frederick's son John Alexander Wadelin, born 02 Oct 1886 in Mansfield, Pa. and died 19 Nov 1935 in Cleveland. The 1900 Census is also on that site, but they are mistranscribed as Nadelin.
1910 Census, Cleveland, OH, 6908 Peck Avenue N.E.
Wadelin, John A., age 22, married once for 3 years, born Ohio, parents born Eng., occupation - paint mixer, rents home
wife Edith, age 21, married once for 3 years, mother of one child, born Ohio, parents born Ohio, no occupation
son Frederick J., 11 months old, born Ohio
WWI Draft Registration Card
John A. Wadelin
7522 Star Ave., Cleveland, Ohio
born 2 Oct 1886 in Johnstown, Penn.
Occupation: machine adjuster (?), Wolfe Envelope, Cleveland
married, has wife and 3 children
no military service
Medium height, slender build, grey eyes, dark hair
Injured arm, depretion (?) of the skull
1920 Census, Cleveland, OH, 7522 Star Ave.
Wadelin, John, owns home with a mortgage, age 34, married, born Pennsylvania, parents born England, occupation - machine adjuster
wife Mabel, age 43, born Ohio, parents born Ohio, substitute teacher
son Frederick, age 10, born Ohio, father born Pennsylvania, mother born Ohio, attending school
daughter Vernell, age 9, born Ohio, father born Pennsylvania, mother born Ohio, attending school
son John, age 3, born Ohio, father born Pennsylvania, mother born Ohio
1930 Census, Cleveland, OH, 7522 Star Ave.
Wadelin, John, owned home worth $8,000, age 43, married, age at first marriage - 21, born Ohio, parents born England, occupation - mechanic for envelope shop, not a veteran
wife Ester, age 36, age at first marriage - 22, born Ohio, parents born Ohio, no occupation
son John, age 13, single, born Ohio, attending school
There's a death certificate for Edith, who died 18 Jan 1911, and Mabel, who died 24 Jul 1929, both in Cleveland. Edith died from a pulmonary embolism related to childbirth.
A possible match from the Florida Death Index:
John Albert Wadelin
Died: 3 Feb 1985
County of Death: Duval
State of Death: Florida
Age at Death: 68
Race: White
Birth Date: 27 Jun 1916
Social Security Death Index:
John Wadelin
Last residence: Orange Park, Florida
Born: 27 Jun 1916
Died: Feb 1985
SSN issued in Ohio before 1951
Did Frederick have a sister named Mary Jane? I'm seeing a death certificate for Mary Jane Jones, born 29 Sep 1865 in England, daughter of John Wadelin and Mary Jane Parks, which seems to sort of line up with the parents' names on Frederick's death certificate. She died 30 Mar 1953 in Warren, Ohio.
Burials for Frederick, Jane, and Edith listed here:
http://www.rootsweb.ancestry.com/~ohcuycem/wachcic_wanamaker.htm