Genealogy from Greek genea meaning descent and logos meaning knowledge is the study of families and the tracing of their lineages and history. Genealogists use oral traditions, historical records, genetic analysis, and other records to obtain information about a family and to demonstrate kinship and pedigrees of its members. The results are often displayed in charts or written as narratives.
On the website you can find data for the Royal Family of Britain, and also info on just about all the Royals in Europe.
As well these include Paul Theroff’s Online Gotha, German Nobility Database, Maori Royalty of New Zealand, Early British Kingdoms and The descendants of Charlemagne.