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James Weatherby published the first General Stud Book (GSB).
Still published by Weatherbys every four years the GSB records the breeding records for Thoroughbreds in GB and Ireland.


Jockey Club Senior Steward, Lord Villiers, proposed admission to the General Stud Book be limited to progeny of horses already accepted in earlier volumes. Dubbed “The Jersey Act” this proposal was adopted and featured in Volume 22 of the GSB.  (Named the Jersey Act as Lord Villiers was in line to be the Earl of Jersey).


“Jersey Act” abolished following consultation with other countries who the act impacted on – and application from the Thoroughbred Breeders’ Association.


Volume 36 of the GSB contained wording to reserve the right to exclude and include horses and saw the introduction of the “blue pages” featuring Vehicle mares whose progeny were considered Thoroughbred.


Weatherbys took over the Non-Thoroughbred Register (NTR) from Miss Prior the compiler of the Half-Bred Stud Book for the breeding of horses for racing who were not full Thoroughbred (published 1914 – 1972).


First NTR publication, “The Register for Non-Thoroughbred Mares” was published.


Weatherbys were appointed Secretariat to the International Stud Book Committee.


Parentage verification for all Weatherbys registered foals through blood typing was introduced (blood typing technology was first trialled by the Stud Book in the 1970s).


(GB) and (IRE) country suffixes were introduced behind a horse’s name to indicate country of foaling e.g. Sea The Stars (IRE).


Foal Passports were introduced – prior to that Foal Identification Certificates were issued. Passports were issued for breeding and racing stock prior to 1991.


Return Of Mares Annual included an NTR section, replacing the “Register for Non-Thoroughbred Mares” publication.


The age limit for late returns for horses over three years of age was relaxed. A late return can now be of any age, but must meet the late return registration criteria including proof of age.


Passport life numbers were introduced.


From 1999, all foals in GB and Ireland registered with Weatherbys were microchipped.


DNA parentage verification was introduced – replacing Blood typing.


In response to a request from the Irish Thoroughbred Breeders Association, Volume 45 of the General Stud Book was split into GB and Irish sections. All mares continue to be sourced through the Index (Volumes 1 to 19 of the General Stud Book (1793-1901) contained an Irish mares section).


First Stud Book Fact Book published featuring statistics not previously available to the industry.


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