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Newcastle in Weston County, Wyoming — The American West (Mountains)
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The Hanging of Diamond L Slim Clifton

Wyoming

 
 
The Hanging of Diamond L Slim Clifton Marker image. Click for full size.
Photographed by Jimmy Emerson, June 5, 2009
1. The Hanging of Diamond L Slim Clifton Marker
Inscription. In the 1890s, William C. Clifton, a well known cowboy nicknamed "Diamond L Slim," had a homestead near Gillette, Wyoming. While visiting his family and friends in Council Bluffs, Iowa he met a young couple, John and Luella Church. A friendship immediately developed. Clifton convinced the Churches to move to Wyoming and homestead next to him.

Initially, Clifton and the Churches were good neighbors. But, in late 1902, their friendship quickly soured over a monetary debt Clifton owed to his neighbors. Shortly thereafter, nothing more was heard from or about the couple. In the spring of 1903, an inquisitive neighbor found Clifton rummaging through the Church's house and possessions. Because Clifton's behavior and explanations for his actions seemed suspicious, and because the Churches could not be located, authorities were notified. On April 17, 1903, Clifton was arrested for the murder of Luella and John Church. A long interrogation followed. Slim denied any wrong doing, but after numerous pleadings from county officials and Luella's parents, Slim confessed and drew a map to their common grave.

Local people were incensed
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by the deaths of the well-liked couple, and talk of lynching was rampant. For Clifton's safety, officials moved him from Gillette to Newcastle to await trial, but this protective measure proved of no avail. Sometime past midnight on May 27, 1903, vigilantes stormed the jail, took Clifton from Sheriff Billy Miller at gun point, and dragged Clifton to a bridge on the main track to the Cambria Mining Company. Masked men slipped the noose around Clifton's neck and dropped him from the bridge, neatly decapitating him in the process. Clifton was later buried in a pauper's grave, in Newcastle.
 
Topics. This historical marker is listed in these topic lists: Law EnforcementNotable Events. A significant historical date for this entry is May 27, 1903.
 
Location. Marker has been permanently removed. It was located near 43° 51.261′ N, 104° 12.355′ W. Marker was in Newcastle, Wyoming, in Weston County. It was on West Main Street near Railway Avenue. Touch for map. Marker was at or near this postal address: 222 W Main Street, Newcastle WY 82701, United States of America.

We have been informed that this marker is no longer there and will not be replaced.
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This page is an archival view of what was.

Regionally, this marker was in Wyoming’s Powder River Basin. It was also in the American Mountain West, in the Black Hills, on the Great Plains, on the Northern Plains, and specifically on the High Plains. Globally, it was in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it found itself in what was once the Louisiana Purchase.

Other nearby markers. At least 8 other markers are within 5 miles of this location, measured as the crow flies: Hanging of Diamond L. Slim Clifton (a few steps from this marker); The Trains Power Newcastle (within shouting distance of this marker); Cambria Powers the Trains (within shouting distance of this marker); Accidental Oil Well (approx. 4 miles away); Cambria (approx. 4½ miles away); Site of Field City (approx. 4.7 miles away); Salt Creek Overlook (approx. 4.8 miles away); The Jenney Stockade (approx. 4.9 miles away). Touch for a list and map of all markers in Newcastle.
 
More about this marker. Per Google Street View, the marker was still standing in July 2012 but replaced by November 2021.
 
 
Credits. This page was last revised on July 21, 2026. It was originally submitted on July 20, 2026, by Jimmy Emerson of Dalton, Georgia. This page has been viewed 17 times since then. Photo   1. submitted on July 20, 2026, by Jimmy Emerson of Dalton, Georgia. • Andrew Ruppenstein was the editor who published this page.
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Aug. 16, 2026