In the year 1331, the two villages were fiefs of Ludwig von Onovilsheim.
The following year, in 1332, they came as a legacy to Hanemann II and to Ludemann  III, both Lords of Lichtenberg.
After this succession the two squires received with Brumath and the Castle of Grand Arnsberg a series of villages including Altdorf and Eckendorf.
This possession was shared between the children of Ludemann III.
Simon received among others Altdorf and Eckendorf.

After the Lords of Lichtenberg had entered into possession of the two villages, they settled in the Eckendorf castle, a feudal lordship that took the name Eckendorf.
From 1334 there are the names of Hans von Eckendorf but also Blass, Fritsch, Ludwig, and Götze.
This last was Priest and Canon in Saint-Étienne of Strasbourg in 1365.
In 1356 Knight Ludwig von Eckendorf took an oath of citizenship in Strasbourg.
In 1384 Ludwig received Lord Ottemann at Ochsenstein, at the fiefs of Furchhausen, Wolschheim, Dettwiller, Hegeney, and Hochfelden.
On 12 September 1390 Ludwig von Eckendorf participated in a tournament at Strasbourg.
In the middle of the 14th century the nobles of Eckendorf lived in Strasbourg.

In the year 1365 Knight Hans Zuckmantel the elder was confirmed in his fief at Eckendorf.
He succeeded Ludwig von Eckendorf and Otto von Hochfelden, son of Ottemann.
These last possessed between them the castle of Eckendorf and the rights to tithe at Eckendorf.
Hans Zuckmantel was originally from Silesia.
He was a knight in the castle of Brumath with the nobles of Weitersheim with whom he shared arms.
Hans Zuckmantel, knight of Brumath, son of Knight Wilhelm obtained, by marrying the daughter of the Knight Nicklaus von Grostein suzerainty over the village of Wintzenheim – another fief of Lichtenberg.

In 1577, the village communities of Eckendorff and Aldorff were granted a seal with the description: Sankt Martin zu fuss, seinen Mantel teilend, mit dem Armen nackt am Rande of Weges sitzend eine zur Seite, Kirchlein und mit Augen Gottes auf einem Hügel zur anderen Seite das ganze in Gold auf blauem Grund.
This seal is currently held by the Museum of Bouxwiller.

The Armorial of Louis XIV, took back the seal and revealed a new seal, in heraldic language, for the communities and Oberaltorff Exquendorff: Azure, Saint Martin cutting his cloak in half to give to a pauper sitting sinister, the saint to dexter of a pile of a church set on a hill, all Or.

However, the heraldic commission created by the prefect of the Bas-Rhin in 1946 changed this blazon by simplifying it to: Or, the yoke of Saint Martin Azure.
However, the municipality was not aware of this work and used a shield representing an apple upside down until 1990.
Learning of the existence of the 1577 seal, they decided to adopt a design inspired by that shield.
The simplified shield created by the heraldic commission was never used by the municipality.
In the year 1331, the two villages were fiefs of Ludwig von Onovilsheim. The following year, in 1332, they came as a legacy to Hanemann II and to Ludemann  III, both Lords of Lichtenberg. After this succession the two squires received with Brumath and the Castle of Grand Arnsberg a series of villages including Altdorf and Eckendorf. This possession was shared between the children of Ludemann III. Simon received among others Altdorf and Eckendorf.
After the Lords of Lichtenberg had entered into possession of the two villages, they settled in the Eckendorf castle, a feudal lordship that took the name Eckendorf. From 1334 there are the names of Hans von Eckendorf but also Blass, Fritsch, Ludwig, and Götze. This last was Priest and Canon in Saint-Étienne of Strasbourg in 1365. In 1356 Knight Ludwig von Eckendorf took an oath of citizenship in Strasbourg. In 1384 Ludwig received Lord Ottemann at Ochsenstein, at the fiefs of Furchhausen, Wolschheim, Dettwiller, Hegeney, and Hochfelden. On 12 September 1390 Ludwig von Eckendorf participated in a tournament at Strasbourg. In the middle of the 14th century the nobles of Eckendorf lived in Strasbourg.
In the year 1365 Knight Hans Zuckmantel the elder was confirmed in his fief at Eckendorf. He succeeded Ludwig von Eckendorf and Otto von Hochfelden, son of Ottemann. These last possessed between them the castle of Eckendorf and the rights to tithe at Eckendorf. Hans Zuckmantel was originally from Silesia. He was a knight in the castle of Brumath with the nobles of Weitersheim with whom he shared arms. Hans Zuckmantel, knight of Brumath, son of Knight Wilhelm obtained, by marrying the daughter of the Knight Nicklaus von Grostein suzerainty over the village of Wintzenheim – another fief of Lichtenberg.
In 1577, the village communities of Eckendorff and Aldorff were granted a seal with the description: Sankt Martin zu fuss, seinen Mantel teilend, mit dem Armen nackt am Rande of Weges sitzend eine zur Seite, Kirchlein und mit Augen Gottes auf einem Hügel zur anderen Seite das ganze in Gold auf blauem Grund. This seal is currently held by the Museum of Bouxwiller.
The Armorial of Louis XIV, took back the seal and revealed a new seal, in heraldic language, for the communities and Oberaltorff Exquendorff: Azure, Saint Martin cutting his cloak in half to give to a pauper sitting sinister, the saint to dexter of a pile of a church set on a hill, all Or.
However, the heraldic commission created by the prefect of the Bas-Rhin in 1946 changed this blazon by simplifying it to: Or, the yoke of Saint Martin Azure. However, the municipality was not aware of this work and used a shield representing an apple upside down until 1990. Learning of the existence of the 1577 seal, they decided to adopt a design inspired by that shield. The simplified shield created by the heraldic commission was never used by the municipality.
Alteckendorf