The surname Jerger is derived from the personal name Jörge or its diminutive form, Jörgen. These are both derived from the same root as the name George, which in turn comes from the Greek name "Georgios," which means 'farmer.' The suffix -son and its variants are translatable as 'son of.'
Spelling variations of this family name include: Jirgesen, Jirgeson, Jirgessen, Jirgesson, Jirgensen, Jirgenson, Jirgenssen, Jirgensson, Jírgesen, Jírgeson, Jírgessen, Jírgesson, Jírgensen, Jírgenson, Jírgenssen, Jírgensson, Jorgesen, Jorgeson, Jorgessen, Jorgesson, Jorgensen, Jorgenson, Jorgenssen, Jorgensson, Jörgesen, Jörgeson, Jörgessen, Jörgesson, Jörgensen, Jörgenson, Jörgenssen, Jörgensson, Juergesen, Juergeson, Juergessen, Juergesson, Juergensen, Juergenson, Juergenssen, Juergensson, Jurgesen, Jurgeson, Jurgessen, Jurgesson, Jurgensen, Jurgenson, Jurgenssen and many more.