Francis I, Holy Roman Emperor
Some Ficquelmonts who had followed Emperor Francis of Lorraine to the Imperial Court and therefore already established themselves in Austria, chose to settle in Austrian territory. Of that tight branch are Reichsgraf Charles de Ficquelmont, Great-chamberlain of Francis I, Holy Roman Emperor, colonel of HIM's cuirassiers commanding the imperial guard's cavalry and his son, Reichsgraf Jacques-Charles de Ficquelmont, colonel of the guard and Great-chamberlain of Francis I, Holy Roman Emperor, commanding the cavalry regiment of Kalchreuth then of Thun. By the end of the 18th century, they had settled in large estates in the then Austrian Netherlands.