[1] The main branches of the family settled within the territory of the Holy Roman Empire that is now Eastern Switzerland, Southern Austria and Northern Italy.

Hermann In der Maur (or Mur) was granted a coat of arms including a green shamrock clover leaf on a golden shield in 1478.

[2][3] They were members of the Bürgergemeinde, and therefore part of the Swiss bourgeoisie,[3] Throughout the Middle Ages and Renaissance period, the In der Maurs held administrative roles in the government of Farniwang/Bernang (later called Berneck) as Landamänner (Ammann), or chief magistrates of the rural Landsgemeinde, and as clerks of the court (Gerichtsschreiber).

[4][5] They continued having political and economic influence in the region after the Abbey of Saint Gall gained control, having been granted privileges by the Prince-Abbots of St. Gallen.

[10][9] In 1609, the Ammann Ulrich Indermaur, along with Thomas Haingler and Georg Schegg as appointed committee members and official representatives of the Court of Berneck, handled a property and inheritance dispute with Count Kaspar zu Hohenems.

[4] In 1610 Ulrich Indermaur was part of a group of government officials who made inspections with the local bailiff and Prince-Abbot's ordiners.

[4] Ulrich Indermaur collected taxes on the property, including an annual interest of 1 pound, 9 shillings, 10 pfennings, and 2 chickens, as well as a premium of 5 guilders, which went back to the hospital.

[4] In 1612, the Lords of Zürich, supporting Protestantism, selected a local preacher named Heinrich Rauch to fill the post in Berneck.

[4] Rauch was presented to Prince-Abbot Bernhard Müller by Baltus Torgler and the Ammann Heinrich Indermaur on behalf of the lords.

[4] After Rauch agreed to keep in line with Church teaching and to preach peace and unity in the community, he was allowed to make his vows to the Prince-Abbot and was granted a fiefdom.

[4] On 14 July 1614, the Ammann Ulrich Indermaur signed and presented a request to Prince-Abbot Müller on behalf of the priest Sebastian Roth of Berneck and the local Catholic Church to appoint the clergyman Georg Keizer, the former pastor of Flawil, to a local curatorship and allow him to preach at the early masses.

[4] In 1615 the Ammann of Berneck, Ulrich Indermaur, owned a vineyard called Tannweg that bordered the estates of Rudolf Jäkli, Sebastuan Dierauer, and Kaspar Weber.

[4] In 1620, Jakob Indermaur was one of 13 men ordered by the Court of Berneck to ensure streets, paths, and bridges were cleared and cleaned between the vineyards of the Junker Hans Kaspar Rugg von Tannegg, representing his cousin Magdalena Rugg, the Ammann Hans Kaufmann, and Lukas Studach von Altstätten.

[11] In 1479, a branch of In der Maurs, who settled in Habsburg-ruled South Tyrol,[12] were granted a coat of arms by Frederick III of the Holy Roman Empire.

[19][20] In 1615 Caspar Indermaur funded the construction of the Catholic Chapel of St. Anna at Ansitz Strehlburg, one of the In der Maur estates in Kurtatsch.

[36] In the 1800s, members of the family held government administrative positions as court clerks, scribes, and Bezirksammann (district magistrates).

[37][38][39][40] In the middle of the eighteenth century Paulus In der Maur of Berneck (1732–1805) moved from Switzerland to Schoonhoven, South Holland, the Netherlands, thus creating a Dutch branch of the family.

[48] The Austrian In der Maurs included the nobiliary particles von (descending from) and zu (resident at) in their surname as von In der Maur auf Strehlburg und zu Freienfeld, referencing two of their principal estates, Strehlburg and Freienfeld, in South Tyrol.

A restaurant in Rorschach, Zum goldenen Fass, was started by Johann Indermaur of Berneck in 1905 and is still owned and operated by the family.

[53][54] In 2000 the family sold a kitchen business to Ruedi Kälin, Claude Strickler and Rolf Kurath, who incorporated it into the company ASTOR Küchen AG in Einsiedeln.

In 1903, Percival Indermauer, a twenty-seven year old mail clerk from Washington, D.C., was injured during the Wreck of the Old 97 in Danville, Virginia, United States.