Book Mystery--- What's the Name?

I've been asked to help solve a mystery. While the book seems familiar, I just can't put my finger on it.

Here is what we know...

The novel is about a deaf doctor.

The doctor has been on a train and heading home after his father’s death (his father who was also a physician).

It may be set during the civil war.

The father had some sort of a relationship with a Native American Indian woman.

If you can help, please send me an email! yadeafcharacters@ gmail.com

UPDATE: This wasn't the book that was lingering somewhere in the back of my mind but apparently this one is the best fit.

Shaman (1993)by Noah Gordon

Paperback: 652 pages
ISBN-10: 0751500828

From Publishers Weekly

In the New World, young Scottish physician Rob J. Cole seeks the justice and tolerance that seemed missing in the Old. But in Boston in 1839, where he assists surgeon Oliver Wendell Holmes, he finds the same mixture of altruism and evil that informs all human pursuits. Joining the Union Army in civilian service, Rob J. moves to the wilderness of Illinois. Gordon ( The Rabbi ) deftly employs Rob J.'s diary, which is read by his son Shaman, also a doctor, after his father's death, to reveal the Coles's early family years. In doctoring and sheep farming, Rob J. builds a worthy life, marrying the beautiful and haunted Sarah. While dealing sensitively with Sarah's jealousy of his Indian soulmate, the female shaman Makwa-ikwa, and with Shaman's deafness, Rob J. often escapes into the demands and rewards of his practice. The search for Makwa-ikwa's murderer raises such issues as racial injustice, religious prejudice and pacifism. In serviceable, if curiously unemotional prose, Gordon tells a quietly absorbing story that should please a wide audience.