25th President: William McKinley, 1897
Nail = 25 (McKinley was the 25th president)
Mac kindly (lent to her) = McKinley
Heavy bag = 897 = 1897 became president
William Shakespeare = William
As she left the nail (25) bar, the mac kindly (McKinley) lent to her meant she didn't get wet as she carried her heavy bag (897) home.
Connect McKinley to William
The mac kindly (McKinley) lent to her belonged to William Shakespeare. She gave it back to him on stage.
NOTE: The way Mammoth Memory remembers William is to think of William Shakespeare.