Here are some possible explanations:
* Misspelling of "ingle nook": This refers to a cozy corner by a fireplace, often with a seat or bench.
* Misspelling of "ingenuous": This means innocent, naive, or trusting.
* A made-up word: It could be a fictional term created for a specific purpose, perhaps in a story or game.
To understand the meaning, you'll need more context.
Please provide the source where you encountered "ingledue" and any other relevant information.