Documents from the reign of King Ottokar prove that saffron played a major role in Loosdorf's economy from an early stage.

[3] The town experienced a major period of prosperity in the 16th century, under the reign of Hans Wilhem of Losenstein, who expanded the Schallaburg, rebuilt the town church, which had been destroyed by Turkish soldiers in 1588 and, opened a protestant school in Loosdorf, called 'die Hohe Schule' ('the High School').

[5] Due to its location and relative size, Loosdorf was given a train station on the Western Railway (Westbahn) upon its opening in 1858.

[7] The economic boom brought by the railway came hand-in-hand with a societal realignment, as the connection to nearby industrial hubs led to the conservative, bourgeois population being largely replaced by a new, predominately social democratic working class.

[10] Due to the bank crash of 1873, Antoni Halka Ledóchowski lost most of his capital, so in 1874 he sold his house in Loosdorf and moved to St. Pölten.

In April 1882 Count Antoni Halka Ledóchowski acquired an estate in Lipnica in Lower Poland, about 48 km from Kraków.

Mary Theresa founded the Soladity of Saint Peter Claver,[13] that acted against slavery in Africa.

In 2003 Ursula Ledóchowska was canonized as a Roman Catholic saint by Pope John Paul II.

Finally, the Soladity of Saint Peter Claver of Salzburg, that was founded by Mary Theresa Ledóchowska, acquired the house.