Historical Society Marker #26 Multi-Cache

Chippewa County has 53 Historical markers; read them and learn a bit about the history of the Chippewa Falls area.
The final cache can be found at:
N44° 56.ABC   and   W091° 23.DEF

Use the following clues to find the final cache.  This information is located on the Historical Marker.
 
A= The number of grown children Hannah had.
B= The number of brothers Edward had.
C= The last two digits of the year that Edward died minus 8.
D= Last digit of the year the building was built.
E= The date in March that Edward was born minus 4.
F= The last digit of the year that Hannah died.

The final is in a very high traffic area so stealth is a requirement, and you will need to BYOP.

You can validate your puzzle solution with certitude.