Charles,

I checked the Soldiers and Sailors System and found this.

Henry M. Morrison also listed as J. M. Morrison ( Same man )
Entered service as a private then made Captain of Company I, 6th Texas Cavalry.

John D. Morrison Private, Company I, 6th Texas Cavalry

William J. Morrison Entered service as a Private then made 3rd Lieutenant.

I also found J. B. Morrison Private Company A, 6th Texas Cavalry.

Thanks,
Gary D. Bray