Húrin knowing everything

[ethelion]

Hi,

I have just finished reading The Children of Húrin, with The Wanderings of Húrin and have just gone back to the Silmarillion.

*Spoilers*
Húrin has met Mim the dwarf and I was wondering if I have missed something. Húrin seems to know all about Túrin and what happened to him, his dealings with the dwarf and about his Túrins death in detail when he spoke to Morwen at the grave.
I was wondering how he knew this? Did Morgoth tell him? Or something, maybe I read it and forgot.

Thanks for any help!