Nothing in The History of Middle-Earth series to really answer that question, that I remember anyway.
Incidentally, if 'Penlod' was to later exist as a character (as he only appears in the early Fall Of Gondolin published in The Book of Lost Tales if I recall correctly), one thing we might add, noting Penlod 'tallest of Gnomes', is that in the much later version Turgon (Unfinished Tales, note 31, Of Tuor And His Coming To Gondolin) was to appear 'tallest of all the Children of the World, save Thingol'
According to even later text Argon appears to be taller than Turgon, and then again, Argon had perished before Tuor met Turgon.
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