Some may be spoilers and I thank "forums.warriorcats.com"
~Thistleclaw originally went to Starclan, but Bluestar chased him to the Dark Forest
~When Scourge killed Tigerstar,slicing his belly,Scourge struck nine major organs,each causing
Tigerstar to loose a life~Spottedleaf was killed so Fireheart wouldn't have to choose between her and Sandstorm
~Vicky confirmed that Frostfur, Loudbelly and Speckledtail all died of starvation a few moons after the clan left