From Modern American

The name Davell is best understood as a variant or modern spelling connected to David. The root name David has origins in Hebrew and Biblical and is generally associated with the meaning beloved. This makes Davell a creative or alternate form that carries the sound and general symbolism of David, while giving the name a more distinctive spelling. Because Davell itself may not have a separate ancient etymology, its meaning is most safely traced through the better-documented root name David.