I think this is Albert/Adelbert. You might want to check with the Memorial Cemetery in Skokie, IL (or th funeral home on Anna's record), to see if they are buried together and this is correct.
Source: "Illinois, Cook County Deaths, 1878-1994," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2MD-4CVQ
: 18 March 2018), Albert Knop, 06 Dec 1922; citing Chicago, Cook, Illinois, United States, source reference , record number , Cook County Courthouse, Chicago; FHL microfilm .
Illinois, Cook County Deaths
: Albert Knop
: Residence 2412 Lincoln Ave
: Occupation Delicatessen Owner
: Death 06 Dec 1922 Chicago, Cook, Illinois
: Entry Number 29030
: Burial Memorial Park
: White Male Married
: Age 63 Birth 08 Nov 1859 Germany
: Father Carl Knop
: Mother Carolina Eichholz
: Spouse/Informant Anna Knop
The births on this census seems to match these 2 people.
Source: "United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSQC-TYX
: accessed 4 September 2019), August Knop in household of Albert Knop, Precinct 5 Chicago city Ward 24, Cook, Illinois, United States; citing enumeration district (ED) 714, sheet 7A, family 98, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,273. Image: https://www.familysearch.org/ark:/61903/3:1:S3HY-67B7-LP1?i=7&cc=1325221&personaUrl=%2Fark%3A%2F61903%2F1%3A1%3AMSQC-TYX
United States Census, 1900 Precinct 5 Chicago city Ward 24, Cook
: Albert Knop Head Male 41 Nov 1859 Germany immig 1880 naturalized
: Anna Knop Wife Female 36 Dec 1864 Germany Married 15 yrs 2 children/2 living immig 1883
: Alfred Knop Son Male 14 Jul 1884 Illinois
: August Knop Son Male 11 Aug 1889 Illinois