sentences:  Urach had, in fact, been a dukedom in name only, to which no territorial duchy had been attached.Prince Wilhelm Albert succeeded his brother Karl Anselm as titular Duke of Urach when the latter renounced the headship of the family at Niederaichbach on 9 February 1991, upon the occasion of his marriage to a commoner.He is described as an engineer who lives at Ossenberg Castle near Düsseldorf.