holly may have died in the tunnel collapse but she may come back if she died it didn't say so in the book
Hollyleaf's mate is Fallen Leaves, a former den-guardian ghost residing in the tunnels beneath the lake territories. Their relationship developed while Hollyleaf sought solace and guidance in the tunnels, where Fallen Leaves helped her come to terms with her past and find a sense of peace.
No he dose not
Icewing's mate in the Warriors series is Foxheart.
Ottersplash.
Darkstripe dies before he can have a mate in book 6 the darkest hour. He died in the battle of Bloodclan killed by Graystripe
Loudbelly's mate in Warriors was Daisytoe. They had two kits together, One-eye and Jumpfoot.
bone from bloodclan
Redtail's mate in the Warriors series was Brindleface. They had two kits together, Sandstorm and Ashfur.
i think that it was briarkit (briarkit in the power of three series)
Mosspelt's mate in the Warriors book series is Beetlenose.
Tawnypelt's mate in the Warriors series is Rowanclaw, a former ShadowClan deputy who later becomes ShadowClan's leader. They have kits together named Tigerstar, Dawnpelt, and Flametail.
Blossomkit (Currently known as Blossomfall in ThunderClan) does not have a mate according to the Warriors Wiki.
Leaders are not allowed to have a mate in the Warriors series.