The story
Named after Ludvig Lorenz. This is a different person than Hendrik Antoon Lorentz for whom the Lorentz group is named.
Etymology from Wiktionary, CC BY-SA 4.0.
Lorenz gauge
Today it means: A partial gauge fixing of the electromagnetic vector potential, used to eliminate the redundant spin-0 component in the (1/2,1/2) representation of the Lorentz group. Full definition →