J.P. Jensen 
Last updated: 22.06.17
All that can presently (May 2013) be gleaned about by internet searching is that J.P. Jensen is the one-off composer of The Jolly Coon (1899) published by S. Brainard's Sons Co., Chicago, Illinois, USA.
Surfers are welcome to contribute information about this composer.

Further sheet music at DBE: ON HOLD