855.] The University of Konigsberg was already founded several years before, in 1544.
Albert had not failed to marry, as Luther counselled: by his first Wife he had only daughters; by his second, one son, Albert Friedrich, who, without opposition or difficulty, succeeded his Father.

Thus was Preussen acquired to the Hohenzollern Family; for, before long, the Electoral branch managed to get MITBELEHNUNG (Co-infeftment), that is to say, Eventual Succession; and Preussen became a Family Heritage, as Anspach and Baireuth were..