Mystery Blue Flower

On my recent trip away, I came across this blue flower on one of my walks. I have absolutely no idea as to what it is & have been searching the net trying to find it. The closest I have come is a "Blue Grass Lily", or a Dwarf Morning Iris", but I really don't think it is either one these. I'll keep searching. If anyone can help it would be greatly appreciated, just to satisfy my curiosity.