Roboss was a 1920 mare who is among the most highly sought. She was out of Bossie A , also bred by Richard Sellman. Bossie A represents the very heart of Sellman's breeding program- she by Major Antoine out of daughter of Major Gordon. Major Antoine was by Meteor Jr. by Meteor by Young Rix who was a son of Chieftain, who was a son of Black Hawk by Sherman Morgan. For the most part these were 16 hand horses either black or brown in color, and from Vermont. From Major Antione on this is considered solid mid-western breeding which is the basis of Sellman's breeding. Most go back to Sherman Morgan, some through Black Hawk. Some go to Woodbury and Bulrush such as Octoroon who is behind Bossie Gordon, the dam of Bossie A. Major Gordon who has the blood of Octoroon also has a line to The Hawkins Horse by Justin Morgan through Joe Brown by Davy Crockett by The Hawkins Horse. Major Gorden also had a line to Woodbury through Comet who was by The Chittendon County Morgan by Putnam Morgan by Woodbury. Comet has this exact breeding on both the top and bottom of his pedigree. In his day Comet was undefeated as a show horse and after he left his home state of Vermont, and went to Kentucky – was considered one of the very best sires in that state. Again, a strong blend of the three famous sons, with lines to lessor known sons , which was characteristic of the Sellman breeding program as the horses were known to be and bred to be sound, hard using stock. Red Oak the sire of Roboss, was by General Gates out of Marguerite, who was by White River Morgan who traces to Woodbury Morgan on both top and bottom of this pedigree. Red Oak was bred by Joseph Battell, and some say he was the best son of General Gates. Certainly the the Ancient Vermont blood of his dam Marguerite was a contributing factor in that. For in addition to Woodbury Marguerite also has the blood of an unnamed daughter of Justin Morgan behind her.This then is the very top line of Primavera Valdez's pedigree through Vaquero Mac.

It is from the dam of Vaquero Mac that a divergence from the very top line begins. While still heavily Sellman breeding in nature, one begins to see more Sherman Morgan and Bulrush Morgan blood added. Oh Cee's Gift ( bred by R.N. Nelson , foaled in 1956) was the dam of Vaquero Mac, and while her sire line Montabell, by Montecrest Sellman by Joe Bailey by Headlight Morgan is pure Sellman breeding her paternal dam line goes back to the famous cross of Bennington and Artemsia, through Querido. This line – that of Jinglebells dam of Montabell brings in more Bulrush Morgan through Morrill and doubles up on Headlight Morgan through his son Easter Allen Morgan.

In addition there is a line to Black Hawk by Sherman here through Easter Allen Morgan's dam-Bessie Morgan. These were all robust horses, some like Bessie Morgan as large as 15.2 hands, others of the 14.3 hand range with weights of 1100 lbs.

It is through Oh-Cee's Gift's dam Jane Abbey , bred by J.C. Brunk, that we see far more of the Sherman Morgan blood. It is here in abundance through Jane Abbey's sire Raragraph by Jubilee King and out of Nella by Allen King. Allen King and Penrod, the sire of Jubilee King were full brothers by Allen Franklin out of Black Bess. Allen Franklin was by Jasper Franklin by Ben Franklin by Daniel Lambert. Jasper Franklin's dam was Twilight by Daniel Lambert. In the fourth generation sire lines of Jasper Franklin, Black Hawk by Sherman Morgan appears four times. Heavy Sherman blood concentration indeed. Daisy, the dam of Allen Franklin has no less concentrated Sherman blood, but hers comes through the famous 'Billy's'- Billy Bodette, and Billy Root- she also carried a line to Royal Morgan by Sherman and one to The Atkins Mare by Sherman. This much blood of Sherman through Daniel Lambert especially was the hallmark of the earlier JC Brunk breeding program- which is indeed another equally important contribution to the foundation of the modern Working Western Family. Black Bess, the dam of Penrod and Allen Franklin, was by Jubilee De Jarnette, the only son of the very famous and undefeated show mare Lady De Jarnette. She was so famous that after a little while nobody would show against her, and she did exhibitions only. She was a five gaited mare. She was a great granddaughter of Black Hawk. Jubilee Lambert was the sire of Black Bess, he was by Daniel Lambert himself, out of a Black Hawk granddaughter. The bottom side of Jane Abbey's pedigree is a virtual repeat of the top side of her pedigree with the addition of Knox Morgan by Mountaineer Morgan who goes back to Sherman , close up on both sides of his pedigree. Knox Morgan was the maternal grandfather of Jane Abbey's dam- Betty Barr. Betty Barr was by Penrod out of Daisy Knox, who was also the dam of the famous Jubilee King son- Red Vermont. Daisy Knox was out of Daisy De Jarnette by Jubilee De Jarnette X Ben's Daisy by Ben Franklin. The dam of Ben's Daisy was the same Daisy as mentioned above as the dam of Allen Franklin.