Statistics for occurrence #1 of “Acting-Master, W. H. Churchill” in chapter 20 of Admiral David D. Porter, The Naval History of the Civil War.:
...cting-Master's Mate, Thomas Levindsell.
Acting-Master's Mate, R. M. Clark. Acting-Master's Mate, Thomas McEllmell.
Acting-Master's L. A. Brown. Assistant Surgeon, C. S. Giberson.
Acting-Master, W. H. Churchill . Third-Assistant Engineer, John D. Ford.
Acting-Master, D. H. Hayden. Third-Assistant Engineer, J. E. Speights.
Acting-Master R. L. Kelley. Third-Assistant Engineer, J. F. Walton.
† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.