Myrtle Hoy 
Last updated: 22.06.17
All that can presently (October 2015) be gleaned about by internet searching is that Myrtle Hoy is the one-off composer of Chippewa Rag (1911) published by Windsor Music Co., Chicago, Illinois, USA.
Surfers are welcome to contribute information about this composer.

Further sheet music at DBE: ON HOLD