In 1851 a trove of roughly 1,800 coins, some made of silver and some of ore, from Roman times was unearthed about 565 m from Hörschhausen, under a heap of rubble while the linking road to Berenbach and on to Ulmen was being built.

In 1895, Hörschhausen was linked to the Eifelquerbahn (Cross Eifel Railway) network through the neighbouring village of Utzerath.

In 1989, Hörschhausen became the finishing place in a stage of the campaign Eine wandernde Flagge für Europa (“A roaming flag for Europe”).

[1] The German blazon reads: In silbern über schwarz geteiltem Schilde oben ein schwarzes Balkenkreuz, unten ein goldener Hausanker in Form des Buchstabens H. The municipality’s arms might in English heraldic language be described thus: Per fess argent a cross sable and sable an H-shaped wall brace Or.

In the early 1950s, the Amt of Daun put forth a proposal to the Koblenz-Ehrenbreitstein State Archive for a few municipalities, among them Hörschhausen, for designs for coats of arms.

Nevertheless, it was not until 1980 that approval was granted for Hörschhausen to bear arms, and it had not been until 1979 that the application had even been submitted to the Regierungsbezirk administration in Trier.