why is でのこと used?


I have two questions regarding the opening lines of a short story called
真夜中の王女(midnight princess)

> ある王国 **でのこと** 。  
>  うつくしい王女が十五歳でなくなって、そのなきがらをおさめたひつぎが、教会にはこびこまれた。

  1. Is the use of でのこと just to give the impression that something is happening or taking place.
  2. Is the verb associated with object marker をおさめた 収める？And if so is なきがらをおさめたひつぎが a polite set phrase that means the burial casket. or is the literal meaning they want because it is a horror story therefore it would be something like corpse interned coffin.

so my interpretation is, In a kingdom a 15 year old beautiful princess passed
away and her corpse interned casket was carried to the church.




For your first question, 王国のこと would just refer to "something about a certain
kingdom". Adding で to get "王国でのこと" means "something that happened in a certain
kingdom".

To give a similar example "バスでの旅行" means "a trip via a bus". Removing the で
here would mean just "a trip of a bus".

So yes, your interpretation of this point is generally correct.

Since this looks like a fairy tale, if you were doing a proper translation you
might use a more appropriate English phrase, like "Once upon a time in a
kingdom".

For your second question, I think Choco's comment confirms the usage of the
verb おさめる in question here.

I would translate this part more as "the coffin carrying the princess's
body..."




For your first question, 王国のこと would just refer to "something about a certain
kingdom". Adding で to get "王国でのこと" means "something that happened in a certain
kingdom".

To give a similar example "バスでの旅行" means "a trip via a bus". Removing the で
here would mean just "a trip of a bus".

So yes, your interpretation of this point is generally correct.

Since this looks like a fairy tale, if you were doing a proper translation you
might use a more appropriate English phrase, like "Once upon a time in a
kingdom".

For your second question, I think Choco's comment confirms the usage of the
verb おさめる in question here.

I would translate this part more as "the coffin carrying the princess's
body..."

