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During 1620, the Cocker came to America on the Mayflower.
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During 1878, the first Cocker Spaniel was registered with the American Kennel Club.
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During the 1920s, the English and American varieties of Cocker Spanels had become noticeably different.
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During the 1940s and 50s, the American Cocker was the most popular breed in the United States and again in the 1980s.
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During 1946, the AKC recognised the English type as a separate breed.
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The first UK Kennel Club registered American Cocker Spaniel was Aramingo Argonaught and on the day he was born. It was bred by Herbert L. Steinberg.
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During the 1960s, the American Cocker was shown as a rare breed, which meant that they did not have a show class of their own and could only be shown in variety classes.
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During the 1960s, Aramingo Argonaught, who was the first American Cocker Spaniel to be shown at Crufts, was in a class called "Any variety not classified at this show".
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During 1970, The Kennel Club in the UK recognised the American Cocker Spaniel as being separate from the English type.
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Sometime during 1970, the breed was given a separate register in the Kennel Club Breed Supplement, because it was previously included in "Any other variety".
