yes-Hollyleaf, Lionblaze, and Jayfeather
Leafpool and Crowfeather had kits between the second and third series.
No because the kits are Crowfeather's and Leafpool's and Ashfur never fell for Leafpool
He has 4. Leafpool:3 kits Feathertail: 0 kits Nightcloud:1 no leafpool had no kits she didnt want to break the warrior code.she ran away with him but didnt have any kits with him!!! You're not far in the books are you?....~Brightsong
Squirrelflight did not have any kits of her own. She raised Leafpool's kits, Jayfeather, Lionblaze, and Hollyleaf, as her own to protect her sister's secret that she had broken the warrior code by having a litter of kits.
Spoiler Alert!!!Leafpool has kits with Crowfeather of WindClan. Her kits are named Hollykit(Hollyleaf), Lionkit (Lionblaze), and Jaykit (Jayfeather)
Leafpool had 3 kits; Hollykit(leaf), Lionkit(blaze), and Jaykit(feather)
Leafpool and Squirrelflight went out of camp together and found a save place for Leafpool to have her kits. They had to wait until the kits were strong enough to travel back toward the clan and because no other cat then Squirrelflight was with Leafpool when she kitted, it was easy for Leafpool to say that the kits were Squirrelflight's. There were some questions of course about it, but the clan believed them.
yes
before The Sight
Brambleclaw has no kits biologically, since it has been revealed that Squirrelflight did not bear him kits; instead, the kits were her sister Leafpool's. However, his adopted kits (the aforementioned kits) would be Jayfeather, Lionblaze, and Hollyleaf (presumed deceased).
Squirrilflight and Leafpool,and leafpool will have Hollykit, Lionkit, and Jaykit and leafpool gives her kits to squirrellflight.
Sandstorm's kits are Squirrelkit (Squirrelflight), and Leafkit (Leafpool).