I think perhaps the Definition of Rock Roll needs to be looked at more closely, some sources say the "Rock Roll" is "Rock and roll (often written as rock roll or rock 'n' roll) is a genre of popular music that originated and evolved in the United States during the late 1940s and early 1950s, primarily from a combination of the blues, country music, jazz, and gospel music. Though elements of rock and roll can be heard in country records of the 1930s, and in blues records from the 1920s, rock and roll did not acquire its name until the 1950s. An early form of rock and roll was rockabilly, which combined country and jazz with influences from traditional Appalachian folk music and gospel".
I which case it may be Elvis (not a personal favourite of mine) or Jerry Lee Lewis.
However, other sources say "they regard it as the music that originated in the mid-1950s and later evolved "into the more encompassing international style known as rock music. Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music. Rock music also drew strongly on a number of other genres such as blues and folk, and incorporated influences from jazz, classical and other musical sources. Musically, rock has centred around the electric guitar, usually as part of a rock group with bass guitar and drums."
In which case Jimi Hendrix or Robert Plant.
I which case it may be Elvis (not a personal favourite of mine) or Jerry Lee Lewis.
However, other sources say "they regard it as the music that originated in the mid-1950s and later evolved "into the more encompassing international style known as rock music. Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music. Rock music also drew strongly on a number of other genres such as blues and folk, and incorporated influences from jazz, classical and other musical sources. Musically, rock has centred around the electric guitar, usually as part of a rock group with bass guitar and drums."
In which case Jimi Hendrix or Robert Plant.