I know nothing of the people behind the Miller's prefix except that they bred some good Morgans.
Admiral's dam, Gertie G, is an example of the mares used by Miller's; mares that came from some different Morgan lines. The sire of Gertie G, Tipperary, with his double Bennington close up, appears in quite a few pedigrees. Polly B, the maternal grand dam of Tipperary, brings in some Daniel Lambert blood as well as some Standardbred.
It is Fryar, dam of Gertie G, that has the most interesting lines behind her. Her sire, Billy K Allen, has only Fryar as a registered offspring, but he has a pedigree rich in the Old Vermont High Percent lines. The maternal grand sire of Fryar, Acme, was strong in the Daniel Lambert lines. Fryar's maternal grand dam was not really a Morgan at all.
To me, this pedigree shows the practicality of the breeders back at the turn of the 1800's to the 1900's. They needed a good using horse and used what was good in their locale. The horses used could be Morgans, Standardbreds, or unregistered horses that met their standards.
Gertie G was bred in Maine but apparently spent her life in Vermont. She had 8 registered foals.
These included: --
Broadwall Folly, who had foals for Broadwall.
--Waseeka's Flirt, who had a thin line that almost made it to today.
--Miller's Pride--sire of Miller's Commander, the Morgan of Denny Emerson's youth. Miller's Sun Tan, dam of Axtell (sire) and Addison Bay (dam for S C Island) and some others who bred on somewhat. Miller's Ben-Del who sired for Tara's and others, and some others who bred on somewhat.
--Miller's Adel, dam of Waseeka's In Command and some others.
--Miller's Admiral, to be discussed below.
Miller's Admiral had 6 registered get before he was exported to Spain.
These include:
--Donna June, dam for Green Meads
--Holley, dam for Applevale and Triton. One of these, Applevale Victoria was dam for Troutbrook and Bellamara.
--Kanthaka sired for Meadowmac, Main-Line, and others.
--Maggie's Mischief had Corimiss (dam of quite a few with the Cor first part of their names) and Cornie (dam of High Aristocrat and others).
The point of all this verbiage? Just a look at an interesting pedigree and how those horses continued to breed onwards. It would appear that many people found these horses of value.