Leopardfoot is the mother of three kits, one of the kits being Tigerkit (Tigerclaw at beginning of series, Tigerstar when leader of Shadowclan) The other kits died.
Yes, but only distantly.1. Lionblaze's mother is Leafpool.2. Leafpool's mother is Sandstorm.3. Sandstorm's father is Redtail.4. Redtail's father is Adderfang.5. Adderfang's daughter is Leopordfoot.6. Leopordfoot's son is Tigerstar.7. Tigerstar's son is Brambleclaw.
After many atemps to find the Mother and Father of Tigerstar, I found them to be Leopordfoot and the honorable Pinestar former leader of Thunderclan.