[2] During the Revolutionary War these Quakers adopted an official attitude of neutrality, but it was in the cemetery adjoining the Old Kennett Meeting House that the first shots of the Battle of the Brandywine were fired on September 11, 1777.

In 1827 Friends split into conservative and liberal sects, and by 1828 there were separate Kennett Monthly Meetings.

The meetinghouse has hosted visitors including Lucretia Mott, William Lloyd Garrison, Sojourner Truth, Susan B. Anthony, and Harriet Tubman.

Old Kennett's tercentennial was celebrated in 2010 with a lecture series and historical tours being held at the meetinghouse.

The meetinghouse is open for Quaker Meeting-for-Worship on the last Sundays of June, July and August at 9:00 am and for occasional weddings, funerals and other events.