Heldenbücher is the conventional title under which a group of German manuscripts and prints of the 15th and 16th centuries has come down to us. Each Heldenbuch contains a collection of primarily epic poetry, typically including material from the Theodoric cycle, and the cycle of Hugdietrich, Wolfdietrich and Ortnit. The Heldenbuch texts are thus based on medieval German literature, but adapted to the tastes of the Renaissance.

Dietrich von Bern is the name of a character in Germanic heroic legend who originated as a legendary version of the Ostrogothic king Theodoric the Great. The name "Dietrich", meaning "Ruler of the People", is a form of the Germanic name "Theodoric". In the legends, Dietrich is a king ruling from Verona (Bern) who was forced into exile with the Huns under Etzel by his evil uncle Ermenrich. The differences between the known life of Theodoric and the picture of Dietrich in the surviving legends are usually attributed to a long-standing oral tradition that continued into the sixteenth century. Most notably, Theodoric was an invader rather than the rightful king of Italy and was born shortly after the death of Attila and a hundred years after the death of the historical Gothic king Ermanaric. Differences between Dietrich and Theodoric were already noted in the Early Middle Ages and led to a long-standing criticism of the oral tradition as false.