[In Europe and Asia, there are still people with nobility titles (aristocrats). German "von" is generally a nobility title, not a mere voorvoegsel. Others are "Earl of" or "His Majesty King of..." etc. Rarely used nowadays, but some systems do keep track of this. ( HL7V3.0 )]
UMLS (HL7) C1550725 Relation/PAR: PersonNamePartAffixTypes