Imperial Knight Eberhard (Bernhar) Buob - Title Imperial Knight

Many online trees state it is documented as Imperial Knight. But many of those same trees go on to explain when Imperial Knight became a title. Year = 1422
" The Free Imperial Knights arose in the 14th century, the fusion of the remnants of the old free lords (Edelfrei) and the stronger elements of the un free ministeriales that had won noble status.

Around 1300 the manorial economy suffered contraction due to the fluctuation in the price of agricultural foodstuffs. Ministeriales who were in a stronger economic position were better able to survive the weakening of the ir basis as landowners. The vast majority languished in poverty, resorting to selling lands to the Church, or to brigandage.

The minority of ministeriales rich enough to weather the crises soon ca me to be identified with the remnants of the free nobility, and were thus seen as constituting one noble order. By 1422 some of these nobles h ad achieved jurisdictional autonomy under the emperor ('immediacy'), and t he corporation of free imperial knights was born. The other ministeriales that did not manage to receive the status of immediate vassals of the emperor were gradually transformed into a titled nobility of free status: t he Freiherren. By 1577 the Imperial Knights achieved the status of a noble corporate body within the empire: the corpus equestre. "

While it is clear he is a Lord and Knight. This title did not exist during his life.