Possivelmente
Deve ser lembrado que as "evidências" que temos são baseadas em relatos escritos que, deve ser declarado, não são imparciais.
Meu googling revelou o 'fato' de que há muito tempo que Breakenridge, que nunca se casou, era homossexual. Isso parece ser baseado em um ou mais livros escritos após sua morte.
Esses rumores podem ter sido disseminados, entre outros, pela esposa de Wyatt Earp, Josephine.
...There was probably no occupation in the West that did not have lesbian and gay participants. William Breakenridge had worked as a Union Pacific brakeman and joined the Third Colorado Cavalry before becoming a deputy sheriff at Phoenix and then Tombstone, Arizona Territory in 1881, where he was known to, and accepted by many of the mining town's community. He was later appointed Deputy U.S. Marshall and finally a special detective for the Southern Pacific railroad. After Breakenridge's retirement, former Wells, Fargo & Co. detective Fred Dodge joked that "Billy was a nice young girl in those days, and undoubtedly today is a nice old lady." Josephine Earp, who with her husband Wyatt knew Breakenridge for many years, later declared that "the one thing I can say in his favor is that he avoided the liaisons with the dance-hall women who so enamored his associates."
No entanto, deve-se notar que Earp e sua esposa não eram fãs de Breakenridge, que foi considerado anti-Earp durante os dias de Tombstone.
In 1928, he [Breakenridge] became a published author with the release of his memoirs of life in Tombstone and the old west, Helldorado: Bringing the Law to the Mesquite. Critics of the book, including Wyatt Earp and his wife Josie, claimed that much of what Breakenridge wrote was biased and more fiction than factual. Although Breakenridge met with Earp in Los Angeles to interview him, the picture he painted of Earp was less than flattering.
Só se pode concluir que, embora não sejam essenciais para o enredo, os realizadores / criadores de filmes consideraram que é preciso o suficiente para que Priestly retratasse Breakenridge como ele fez.