I think this is his wife:

Name: Julia Kovach
Date of Death: 9/20/1984
Date of Burial: 9/22/1984
Age at Death: 86
Marital Status: Widowed
Last Address: 1950 South 73Rd St.
Funeral Home: Schaff
Cemetery: Mount Olivet Cemetery
Location: Block: 28
Section:
Row:
Lot: 198
Grave: 1

Her Social Security info:
Name: Julia Kovach
State of Issue: Wisconsin
Date of Birth: Thursday December 16, 1897
Date of Death: September 1984
Est. Age at Death: 86 years, 8 months
Last known residence:
City: Milwaukee; Greenfield; West Allis; West Milwaukee
County: Milwaukee
State: Wisconsin
ZIP Code: 53219

Wisconsin Death certificate number:
301940
(from ancestry.com Wisconsin Death Index)