The Uranian moon discovered by Voyager 2 that is the inner shepherd of the epsilon ring is Cordelia.
Voyager 2 found Cordelia in images taken on January 20, 1986, during its historic encounter with Uranus. The moon received the temporary designation S/1986 U7 and was later named Cordelia after the youngest daughter of King Lear in Shakespeare’s play.
Cordelia and Ophelia work as a paired system around Uranus’s bright epsilon ring. Cordelia orbits inside the ring and helps constrain its inner edge, while Ophelia lies outside and helps shape the outer edge. Their gravity prevents ring particles from dispersing widely, which is why they are called shepherd moons.
A common mix-up is to answer Ophelia: it is also a Voyager-discovered shepherd moon, but it is the outer shepherd, not the inner one. Cordelia is also the innermost known moon of Uranus and is designated Uranus VI.