All that can presently (November 2023) be gleaned about
Jerry Jarnagin from sheet music covers and by Internet searching is that he was an American actor, composer and concert pianist born in Knoxville, Tennessee.
He published 6 works between 1915 and 1929 as well as being featured on just one work namely
Ireland I Hear You Calling (1915) music by
Bob Allan, words by Walter King and published by
Will Rossiter, Chicago, Illinois, USA
His portrait on the left is taken from that same work where he is shown partnering
Adele Oswold.
He was married to and composed for
Irene Franklin.
Jarnagin died tragically in Los Angeles, California.
Surfers are welcome to contribute any further information about this actor/composer.