errr.... no
No, none of his grandchildren had any children.
Yes, her medicine cat apprentice was Runningnose.
They are unknown. Maybe they will tell it in the new super edition Yellowfang's secret.
Yellowfang's Secret was created on 2012-10-19.
Yes! There will be! It will be about Yellowfang's love for Raggedstar and the secret of the birth of Brokenstar.
England
Yellowfang had a few friends and some are, Firestar, Graystripe, Bluestar, Cinderpaw(pelt) and more.
Jesus had to children
Yes, Firepaw meets Yellowfang in the first book of the Warriors series, "Into the Wild". Yellowfang is an older warrior who becomes a mentor figure to Firepaw.
because yellowfang is wise and could be a great member of thunderclan and she is.
StarClan.
there is no information