Notes:
Data source is Douglas Mumma, 2123 Farmington Place, Livermore, CA 94550, email = doug@mumma.org
Additional data provided by Joan Rothbury Beardsley Lisi, email lisijoan71@gmail.com
Irvin was a member of "Sons of Revolution". He joined as member #515 from California. In reviewing his application, a major error was made in tracing his ancestry. He indicated that he was the son of Benjamin Franklin Muma (1825-1907), son of Jacob Mumma (1794-1871), son of Samuel Mumma (error), son of Christian Mumma ( - 1778). His grandfather was not Samuel Mumma and his father was not Christian Mumma..
His biography is listed in the book "California and Californians" edited by Rockwell Hunt, 1926. Lewis Publishing Company.
His death is listed in the California death index