Alonzo Walling, Scott Jackson’s roommate, was arrested in February 1896 as Jackson’s accomplice in the murder of Pearl Bryan.
Cincinnati phrenologist Dr. S. E. Hyndman analyzed Walling’s character by measuring his head and came to this conclusion:
“Alonzo Walling is easily led in the direction of friendship and in this, he would often do things which his better nature would revolt against. He would not go back on a friend until the very last, and then only to save his own life if he had promised to stand by him. He likes the society of the viscous better than that of the higher order. He would plunge into danger and calculate the chances afterward. His standard of morals is not of a higher order, his perceptive powers are small and if he were to be influenced, he would have to be managed through flattery.”