protoplast

protoplasti puhekieltä Created first; archetypal. (defdate)
The first-created human; Adam. (defdate)
puhekieltä A prototype or archetype; a model. (defdate)
The first person in a given family, lineage etc.; an ancestor. (defdate)
2011, (w), Vanished Kingdoms, Penguin 2012, p. 121:

Habsburg tradition insists that the protoplast of the family was called Guntram.