Wikipedia Says:
In
J. R. R. Tolkien's fictional universe of
Middle-earth,
Pengolodh (also spelled
Pengolod,
Pengoloð,
Pengoloth, and
Pengoloþ — the ending in all cases representing the
voiced dental fricative) was a Loremaster of the
Ñoldor. He appears only in
The History of Middle-earth and not the 'canonical' major published works.
Pengolodh was a
Ñoldorin Elf of
Gondolin, who was born in
Nevrast to a Ñoldorin lord and a
Sindarin lady. Early
tales about the
Fall of Gondolin mention him as one of the lords of the
city, and ruler of
the Twin Folk of the Pillar and the Tower of Snow. As a member of the
Lambengolmor, he was known as the
Sage of the Ñoldor, and counted as the greatest Loremaster since
Fëanor and
Rúmil. He was also the tallest of the
Elves of Gondolin.
Pengolodh escaped the sack of the city with
Tuor and
Idril, and followed them to the
Mouths of Sirion. He is not further mentioned in writing, but since the
Annals of Beleriand are attributed to him, as well as the edited
Annals of Aman (furthering the work of Rúmil), he must have stayed in
Lindon for at least a while after the
War of Wrath, so that the
Dúnedain could copy his work.
It was during his stay at the Mouths that Pengolodh did the majority of his work. Basing on information obtained from the refugees of
Doriath, he made copies and extracts of documents written in
cirth, possibly preserving them as an active writing system.
Later, in the
Second Age, he dwelt in the Ñoldorin kingdom of
Gil-galad. Pengolodh was one of the few
Elves admitted into
Khazad-dûm, where he might have learned
Khuzdul. Pengolodh left
Middle-earth during the War of the Elves and
Sauron and after the fall of
Eregion, and left for
Tol Eressëa, last of the
Loremasters to leave Middle-earth.
Pengolodh does not appear in any of the canon works of Middle-earth, but in
the History of Middle-earth he is given as the author of many works, including the Annals of
Beleriand, a work which was developed by
Tolkien at the same time as
the Silmarillion, and from which
Christopher Tolkien drew much information to establish the published
Silmarillion. Various late essays by Tolkien dealing with
linguism are presented as being the work of Pengolodh, including the essay
Quendi and Eldar.
Early Tolkien texts stated that, after removing to Tol Eressëa, Pengolodh dwelt in a village called
Tavrobel (or
Tathrobel). Centuries later
Ælfwine spoke with him there. The figure of Gilfanon, which fulfilled a similar role as a chronicler of the annals of Beleriand in earlier works, probably became this character as well in Tolkien's mind.
The name Pengolodh was a
Sindarized form of his
Quenya name
Quendingoldo.