MARRIAGE:
1) _________, Mary and Gurski, Johan
2) GURSKI, MARY and FISCHER, KARL vol.0050 pg.0185
(Cuyahoga County Marriage License Index)

Despite what the following obituary says her maiden name was, it appears that she had been married to Johan Gurski who died in 1909 or so. That couple purchased, in 1899, property near Denison and W.14th which then ended up in her daughter, Anna's hands. Maria and Johan also owned property at 3 Pixley Ct.
Her children by Charles Fischer may actually be children of Johan Gursky because Charles was too young when at least a couple of them were born.

DEATH:
Stomach Cancer

OBIT:
Name: Fischer, Maria
Date: May 4, 1918
Source: Source unknown; Cleveland Necrology File, Reel #025.
Notes: Fischer-Maria (nee Gursky), beloved wife of Charles Fischer, West Overlook, Dover, Ohio, May 1, aged 65 yrs. Funeral from Lutheran church, North Ridge road, Sat., May 4, at 2 p. m. Burial at Brooklyn Lutheran cemetery.

1. Anna M. FISCHER b. Abt 1883; d. Mar 1966.
2. William C. FISCHER b. 10 Feb 1890; d. Jul 1970.
3. Otto G. FISCHER d. Mar 1972, Cleveland, Cuyahoga, Ohio.
4. 1. Edward FISCHER
5. Louise FISCHER d. May 1965.