Ernst Heinrich Karlen, C.M.M. (1922–2012), Swiss Prelate of Roman Catholic Church
His work builds on pioneers in this field such as: Judith Kestenberg, Dori Laub, Selma Fraiberg, Alicia Lieberman, Susan Coates, Charles Zeanah, Karlen Lyons-Ruth, Yael Danieli, Rachel Yehuda and others.
The character (portrayed by John Karlen) has more recently appeared in a number of audio dramas produced by Big Finish Productions.