Henry the Fowler in the context of "Ottonian art"

The Holy Lance, also known as the Spear of Longinus (named after Saint Longinus), the Spear of Destiny, or the Holy Spear, is alleged to be the lance that pierced the side of Jesus as he hung on the cross during his crucifixion. As with other instruments of the Passion, the lance is only briefly mentioned in the Christian Bible, but later became the subject of extrabiblical traditions in the medieval church. Relics purported to be the lance began to appear as early as the 6th century, originally in Jerusalem. By the Late Middle Ages, relics identified as the spearhead of the Holy Lance (or fragments thereof) had been described throughout Europe. Several of these artifacts are still preserved to this day.

Holy Lance relics have typically been used for religious ceremonies, but at times some of them have been considered to be guarantees of victory in battle. For example, Henry the Fowler's lance was credited for winning the Battle of Riade, and the Crusaders believed their discovery of a Holy Lance brought them a favorable end to the Siege of Antioch.

Henry II (German: Heinrich II; Italian: Enrico II; Latin: Henricus; 6 May 973 – 13 July 1024), also known as Saint Henry, Obl. S. B., was Holy Roman Emperor (Latin: Romanorum Imperator) from 1014. He died without an heir in 1024, and was the last ruler of the Ottonian line. As Duke of Bavaria, appointed in 995, Henry became King of the Romans (Latin: Rex Romanorum) following the sudden death of his second cousin, Emperor Otto III in 1002, was made King of Italy (Latin: Rex Italiae) in 1004, and crowned emperor by Pope Benedict VIII in 1014.

The son of Henry II, Duke of Bavaria, and his wife Gisela of Burgundy, Emperor Henry II was a great-grandson of German king Henry the Fowler and a member of the Bavarian branch of the Ottonian dynasty. Since his father had rebelled against two previous emperors, the younger Henry spent long periods of time in exile, where he turned to Christianity at an early age, first finding refuge with the Bishop of Freising and later during his education at the cathedral school in Hildesheim. He succeeded his father as Duke of Bavaria in 995 as Henry IV. As duke, he attempted to join his second-cousin, Emperor Otto III, in suppressing a revolt against imperial rule in Italy in 1002. Before Henry II could arrive, however, Otto III died of fever, leaving no heir. After defeating several contenders to the throne, Henry II was crowned King of Germany on 9 July 1002 as the first in a line of kings to adopt the title Rex Romanorum as an antedate to his coronation in Rome as Imperator Romanorum. On 15 May 1004, he was anointed King of Italy (Rex Italiae). In that same year, Henry II joined Duke Jaromír of Bohemia in his struggle against the Poles, thus effectively incorporating the Duchy of Bohemia into the Holy Roman Empire.

Otto I (23 November 912 – 7 May 973), known as Otto the Great (German: Otto der Große Italian: Ottone il Grande) or Otto of Saxony (German: Otto von Sachsen Italian: Ottone di Sassonia), was East Frankish (German) king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the eldest son of Henry the Fowler and Matilda of Ringelheim.

Otto inherited the Duchy of Saxony and the kingship of the Germans upon his father's death in 936. He continued his father's work of unifying all German tribes into a single kingdom and greatly expanded the king's powers at the expense of the aristocracy. Through strategic marriages and personal appointments, Otto installed members of his family in the kingdom's most important duchies. This reduced the various dukes, who had previously been co-equals with the king, to royal subjects under his authority. Otto transformed the church in Germany to strengthen royal authority and subjected its clergy to his personal control.

The Duchy of Saxony (Low German: Hartogdom Sassen) was originally the area settled by the Saxons in the late Early Middle Ages, when they were subdued by Charlemagne during the Saxon Wars from 772 CE and incorporated into the Carolingian Empire (Francia) by 804. Upon the 843 Treaty of Verdun, Saxony was one of the five German stem duchies of East Francia; Duke Henry the Fowler was elected German king in 919.

The Battle of Riade or Battle of Merseburg was fought between the troops of East Francia under King Henry I and the Magyars at an unidentified location in northern Thuringia along the river Unstrut on 15 March 933. The battle was precipitated by the decision of the Synod of Erfurt to stop paying an annual tribute to the Magyars in 932.