No one knows the specific date... Only that it happened after the Ancestors where created

So basically in the 1700s between like 1718 and 1766 because New Orleans was created in 1718 and Ysabelle (the witch believed to create the Ancestral Plane) died in 1766?

I would say even after cause it had to be more witches in order to trap Inadu

Sorry for the grammar mistakes...

I would say somewhere after 1776 and Before Vincent lost his child. Due to the fact she was mentioned in spirit form by Vincent when Eva started practicing sacrificial magic.

So that if that evil was running wild for that long why didn’t the Mikaelson’s know that it existed and why wasn’t she wreaking havoc all over NOLA? The Mikaelson’s arrived in 1702 so from what you guys are saying that’s before the ancestral plane was created. I have only seen that season once… so I’m sure there’s a lot I’m missing…🙃

Dude to be honest I don't remember an episode in the entire series telling about the witch and the date that the Ancestral Plane was created

The only thing I remember is that Vincent said Inadu is older even than the ancestors... So taking into account that he knows of the Mickelsons existence, I thought that the ancestors were older... But then I came here and I found out that a witch created somewhen in 1700...

Well Klaus has an uncanny way of sniffing out evils and threats… it just seems really strange that he wouldn’t know about her ESPECIALLY since he’s a werewolf! She put the werewolf curse on everyone so it seems like in his 1000 years he would have traced down the origins of the werewolf curse. Right?

True but he only cared about lifting the curse his mother put him... And some times protecting the werewolves... And creating more enemies... And killing people for literally no reason...

Apparently It was never said in the show when the Ancestral Well was created but in some spin-off books of The Originals... I don't know if they are canon, I didn't search it... But since they have it here it must mean that they are...

I have heard that those books are not canon bc they directly contradict the show BUT the show directly contradicts itself sometimes. Also in 1000 years, yes Klaus was obsessed with breaking the curse but that’s plenty of time to do both. Find out the origins of the werewolf curse. There wasn’t much he could do about breaking the curse if he didn’t currently have a doppelgänger…. He managed to keep the moonstone for what? 850ish years? So while having the witches find away around the doppelgänger he had time to go on a trek to the Andes and lots of other things I’m sure. Idk it just seems weird. Seems like the Hollow would have been after him the minute he stepped foot into that backwater penal colony.