Turgon is so indetified by a line something like "Thus perished Turgrn, the tallest of the firstborn save Thingol" But I am now supecting I am remembering this line form the longer (older) version of the Fall of Godolin from the Booke of Lost Tales, and I am not now sure that it made it into the shortened and rewritten version in the Silmarillion. In any case, what precipitaed this was reading another tokien uncopleted work (The Shiboleth of Feanor) in JRR was adding another brother, Arakano, to Fingon (Findekano) & Turgon (Turakano), who was to be taller than Turgon, and was to be killed in the first skirmish of Fingolfin's host into Middle Earth. Thus the premise of the question is thus obselete within the context of the Silmarillion.
Now, as we all know, the Silmarillion was being written by JRRT by adapting his older wariting of the first ange, mostly in the Book of Lost Tales, the Lay of Lethian, the Lay of the Children of Hurin, and some other materials to the revised version of Middle Earth and its peoples as used in LOTR. In an execptionaly disorganised manner JRRT was writing notes to adapt and rewrite it, and further new marterials to fill in gaps. Chritopher Tolkien then undertakes to organize this into a book, but unfortunately several key manuscripts (such as that named above) were not located until a few years after the Silmarillion is published. He also acknowleged, just shortly after the book was published, two clear error (even using just the material avalable at the time) in the family tree of the Nodorian kings.
Name the two Noldorian kings who are incorectly placed in the family tree in the Silmarillion, and what is their correct position?