African Society of Boston lists Joseph Ball Sr. as a founding member.
African Society (Boston, Mass.), Laws of the African Society, Instituted at Boston, Anno Domini, 1796 (Boston: N. P., 1802), 7
A list of the Members names.
Plato Alderson * Prince M. Harris.
* Hannible Allen Juber Howland.
Thomas Burdine. Richard Holsted.
Peter Baily. Joseph Ball.
Joseph Ball in this document is the father of Joseph T. Ball, who was born in 1804 and ordained an elder.