Grassalkovich who came from a lower noble family and had an education in law, - as a result of his talent - completed a career rising high. He had an important in rising the Queen to the throne, since during the Austrian War of Succession (1740-48) it was Grassalkovich who organised the support of the Hungarian nobility. As a reward for the successful increase of the wealth of the chamber, Antal Grassalkovich the 1st was risen to the rank of a count by Maria Theresa in 1743, and also appointed as a secret councellor.