No I doubt it. Because he is a fair leader.
It is possible, as Onestar has a history of taking harsh actions. However, the outcome would depend on the specific circumstances and Onestar's judgement.
Yes, Hollyleaf hates Breezepelt because his and her father are both Crowfeather, but Breezepelt and Crowfeather are in WindClan.
Whitetail and Onestar did not become mates in the Warriors series. Whitetail is a warrior of ThunderClan and Onestar eventually became the leader of WindClan, but they did not develop a romantic relationship in the books.
She is actually the half-sister of Breezepelt. Breezepelt's mother is Nightcloud, and his father is Crowfeather. Hollyleaf's father is also Crowfeather, and her mother is Leafpool.
Onestar
Breezepelt's grandmother on his Father's side is Ashfoot. His grandmother on his mother's side is unknown.
Breezepelt dies during a battle when he is caught in the collapse of a tunnel. His injuries are severe, and despite receiving medical attention, he succumbs to his wounds.
He hasn't died yet, but he has to eventually!So read omen of the stars
Onestar
status unknown
Crowfeather has a strained relationship with his son, Breezepelt, due to past events and misunderstandings. While their relationship is complicated, Crowfeather does care for Breezepelt deep down, but their issues make it hard for them to fully connect.
No, the reason why is because he loved Leafpool and he didn't love Nightcloud and Breezepelt was his and Nightcloud's kit.
They had many arguments, but Breezepelt and Crowfeather never had a battle. Not yet anyway.