No, they did not. Squirrelflight was their "foster" mother. Lionblaze, Hollyleaf and Jayfeather's real parents are Crwfeather and Leafpool.
So Brambleclaw and Squirrelflight never had any kits.
He pretended she wasn't his mate and made sure "their paths never crossed".
YES. in one of the books, Ashfur tries to kill the Three but Squirrelflight says that they aren't really her kits. Later, the Three unravel the web of mysteries and find out who their true parents are.
no. she is his aunt.
Their kits where believed to be jaykit/paw/feather hollykit/paw/leaf and lionkit/paw/blaze, but they are really leafpool and crowfeathers kits. Squirrelflight lied and told the clan that they where her kits and not leafpools because the kits were half clan and leafpool was a medicine cat. But hollyleaf died when the tunnels collapsed while she was trying to run away from her clan to start a new life. Squirrelflight tells Ashfur that hollleaf,jayfeather,and lionblaze are not her kits because Ashfur was going to let them burn in a forest fire because he once loved Squirrelflight but she chose Brambleclaw over him so he said to her letting her kits die would hurt her in away.Then Squirrelflight tells Ashfur that they are not her kits and he wont hurt her by killing them. Later you find out that jayfeather and lionblaze are really Leafpools and Crowfeather of Wind Clan kits. Squirrelflight and Leafpool lied to protect Leafpools kits and Squirrelflight told everone that they where Squirrelflights and Brambleclaws kits. In Sunrise Leafpool resigns as medicine cat leaving jayfeather as a full medicine cat and Leafpool as a warrior.
No, she has kits with fireheart.
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).
Spiderleg has three kits named Rosepetal, Toadstep, and Daisypetal.
Dovewing and Foxleap do not have kits together, nor become mates.
Moonflower's kits are Bluestar and Snowfur.
No, he doesn't have any kits.
Who are Fire Stars kits
As of yet, Lionblaze has no kits.