From wikipedia
"The "Marshall Tucker" in the band's name does not refer to a band member, but rather a Spartanburg-area blind piano tuner.[4] While the band was discussing possible band names one evening in an old warehouse they had rented for rehearsal space, someone noticed that the warehouse's door key had the name "Marshall Tucker" inscribed on it, and suggested they call themselves "The Marshall Tucker Band," not realizing it referred to an actual person. It later came to light that Marshall Tucker, the blind piano tuner, had rented the space before the band, and his name was inscribed on the key".
"The "Marshall Tucker" in the band's name does not refer to a band member, but rather a Spartanburg-area blind piano tuner.[4] While the band was discussing possible band names one evening in an old warehouse they had rented for rehearsal space, someone noticed that the warehouse's door key had the name "Marshall Tucker" inscribed on it, and suggested they call themselves "The Marshall Tucker Band," not realizing it referred to an actual person. It later came to light that Marshall Tucker, the blind piano tuner, had rented the space before the band, and his name was inscribed on the key".