Is it true that in Lion King Simba had a son named Kopa?

I was wondering because I was looking up stuff about Lion King because i am a huge fan and it came up that Simba and Nala also had a son named Kopa along with Kiara...the rumor is that he was killed by Zira..so idk if this is really true and i also heard that Kopa was Kiaras twin?? because there have been multiple pictures of "Kopa" and im leading to belive that Zira was banished from the pride lands because she killed him { if he really did exist} i doubt its true though