No.. the stories they are based on take place during those times. Frozen and Tangled themselves were adapted by disney, they could be set whenever disney like.
The parents in frozen leave to go to rapunzel's wedding. They get in a shipwreck and wind up on a deserted island. They have a baby named Tarzan but are then killed by a jungle cat. The shipwreck then sinks to the bottom of the sea where ariel sees it.
I also heard that her parents didn't die they washed up on a random island and gave birth to a son named Tarzan. Then were later killed by a wild animal.
No..that theory of Elsa and Anna’s parents going to Rapunzels wedding and have shipwreck,wash ashore and have Tarzan then die from a tiger,and Ariel finds the shipwreck works,EXCEPT FOR TWO MAIN THINGS,Frozen parents ship is a COMPLETELY different ship than what Ariel found,and remember Ariel finds Prince Eric,umm this theory doesn’t work with that,PLUS all this movies are in COMPLETELY different time zones..DUHH
But then maybe Disney really are this evil