Kelsie Morrison—William Stepson

Kelsie Morrison’s connection to William Stepson was not merely an association between a suspected killer and his victim. Authorities came to believe that Morrison killed Stepson in 1922 to marry his widow, Tillie, and obtain control of her valuable estate. The suspected motive turned marriage, guardianship, and inheritance into parts of the same predatory design; the consequences reached beyond the deaths of William and Tillie to the children left behind.

The Suspected Motive

William Stepson was a steer-roping champion whose death, attributed to suspected poisoning, was commonly included in the official tally of murders during the Reign of Terror. Authorities never prosecuted anyone for his killing, but came to believe that Morrison was responsible. By 1922, Morrison had divorced his Osage wife; after William’s death, he married Tillie, the widow, and became guardian of her two children.

An associate told the Bureau that Morrison had admitted killing William so he could marry Tillie and gain control of her invaluable estate. The reported confession linked the killing to a concrete financial and familial objective, though it did not result in a prosecution. The marriage that followed therefore appeared not as a separate event but as the means by which Morrison could enter the household, assume authority over the children, and pursue the estate.

Tillie and the Inheritance

After the marriage, Tillie grew suspicious of Morrison, particularly after he was overheard talking about the effects of strychnine. She confided to her lawyer that she wanted to keep Morrison from inheriting her estate and to revoke his guardianship of her children. Her intentions threatened the control he had obtained through the marriage, but she died of suspected poisoning in July 1923 before she could make those changes.

Tillie’s death was never investigated. Morrison stole much of her fortune, and letters he wrote indicated that he planned to sell part of the estate he had swindled to H. G. Burt, a banker who appeared to be involved in the killing of W. W. Vaughan. Morrison also admitted to an associate that he had killed Tillie. William’s suspected murder thus formed part of a wider sequence: the widow whose marriage had given Morrison access to the estate also became, according to his reported admission, his victim.

The Children as Inheritors and Targets

The deaths orphaned the children in practical as well as familial terms. Marvin Stepson, William’s grandson, later told the book’s narrator that Kelsie had murdered both his grandparents and left his father an orphan. The account identifies the family cost that an official tally of murders could not fully convey: William’s killing was followed by Tillie’s death, while their children remained tied to the estate that had motivated the suspected crimes.

The danger persisted after Morrison was imprisoned for killing Anna Brown. In 1926, he sent William K. Hale a note, intercepted by guards, about Tillie’s children and the money they would inherit. Morrison claimed that he had the children adopted and asked how he might gain possession or control of their funds upon release; he also suggested he could take them out of state without being caught for kidnapping. The note prompted fears that he planned to kill both children. The suspected murder of William Stepson was therefore not an isolated end point: the attempt to control his widow’s estate extended into a continuing threat against the next generation.