Having nothing to do with the characteristics the dogs have, the name is that of the Lacy Family.  Arriving from Kentucky by covered wagon in 1858 the "Lacy Brothers"  settled in the granite hills near Marble Falls, Texas.  As true a pioneer as the men you see in history books, the Blue Lacy Game Dog has filled the needs of Colonial Americans for well over a century on ranches in the Southwestern US.  When the three-wheeled horse hit the trail it brought this unique breed unsuccessfully close to extinction.  While the need for its instinctive herding abilities were diminishing the need for its abilities to bay the fiercest of hog, pick up the trail of any game animal or find a wounded animal on the slightest of blood trails was on the rise in the commercial hunting industry.  They are now the most common breeds used by the United States Trappers.  Blue Lacy owner's claim they are the perfect all-around dogs, knowing where to be at just the right time.  The Lacy family history notes the breed to be the result of Greyhound/ scenthound/ coyote cross with the emphasis on the herding/ droving characteristics.  Many people have their theory on the scenthound used.  Some believe it was a Red Bone Hound, or Italian Gray Hound, others believe it was a July Hound.  What ever the Hound in the combination is the cross-worked.  The Lacy brothers established this breed under the guidelines it takes to develop a recognized breed.v
The coat of the Blue Lacy is smooth, tight, sleek, and exceptionally clean in appearance.  The origin of the unusual slate blue coat and nose is a genetic rarity.  All Lacy's have minimal to full white markings on their brisket and most of the time on paw or paws.  The light gunmetal gray to almost black Lacy’s is classified in color as blue.  The red, yellow to cream Lacy's are classified in color as red.  The tri-colored Lacy's are blue with red markings over their eyes, on muzzle, under tail, and down the legs.  They are classified in color as tri.  Both the red and tri-colored Lacy's hold the name Blue Lacy due to the blue-color gene they possess.  All Blue Lacy's eyes are very bright and distinctive orange to yellow in color.  Which adds a unique touch to their appearance.