Brackenfur (Male), Thornclaw (Male), Cinderpelt (Female), and Brightheart (Female) are all siblings. They are the kits of Frostfur and an unknown father. See related link for the family tree.
Their mother is Frostfur
four, Cinderpelt, Brackenfur, Thornclaw, and, Brightheart
Yes, along with Thornkit, (Thornclaw), and Brightkit, (Lostface/Brightheart).
Cinderpelt's mother was Frostfur, but we do not know for sure who her father was. It may have been Whitestorm though.
Brackenfur was made a warrior before Thornclaw because he was older and had been an apprentice for a longer period of time, demonstrating more experience and readiness for the warrior role compared to Thornclaw. Additionally, leadership decisions in warrior cats are based on a variety of factors including skills, abilities, and the needs of the Clan at that time.
Thornclaw's mother was Frostfur, but his father is unknown.
No, Brackenfur did not die in the Fourth Apprentice.
Brackenfur became a warrior in the book forest of secrets
Yes he is he died trying to save her from the pack kill kill pack pack
No, she does not. She is in love with Crowfeather.
it is unknown but brackenfur's mother is frostfur.
Thornclaw and Spiderleg.