This sentence makes the story feel remarkably fairy tale-esque (not a bad thing, I’m a sucker for fairy tales). But that aside, it doesn’t really capture my attention as much as I feel like it has the potential to.
My own preference is that the opening lines grab you - and I think that’s hard to do when you try to get across more than one thought in a single sentence. So here, you have two thoughts: the proclamation came yesterday, and the village elders have to choose someone to marry the king. The first part of the sentence is also passive.
Instead of “The royal proclamation was brought to our village a day ago,” you could try “They brought the royal proclamation…” to make it more active. But to really grab the reader, you could even start with the elders choosing the marriage candidate, then move to when the proclamation came.
But I would read this! It sounds like something very much up my alley.
The floor was dark with blood.