genealogical generation

Machine-translated from the Dutch article

In genealogy, a generation is the collection of all individuals who are at the same distance from a shared ancestor or set of ancestors, or at the same distance from one or more of the same descendants. Thus, brothers and/or sisters are in the same generation under the first meaning. It is possible for a person to have a child with their uncle; in that case it is clear that the parents of that child do not belong to the same generation under both meanings.