| Family | Maria Lefrois,   b. 0Jun 1853, Rochester, Monroe County, New York, USA  ,   d. 1911, Rochester, Monroe County, New York, USA  (Age ~ 57 years) | 
| Children | 
|  | 1. Frederick Koch,   b. 1877, Rochester, Monroe County, New York, USA  |  |  | 2. Frank Joseph Koch,   b. 1 May 1878, Rochester, Monroe County, New York, USA  ,   d. 24 Jan 1932, Rochester, Monroe County, New York, USA  (Age 53 years) |  |  | 3. Mary Koch,   b. 0Jun 1880, Rochester, Monroe County, New York, USA  ,   d. 1941, Rochester, Monroe County, New York, USA  (Age ~ 60 years) |  |  | 4. Michael P. Koch,   b. 1882, Rochester, Monroe County, New York, USA  |  |