As you all will have seen by now the centre piece of the Corieltauvi Grove Symbol is the Ogham fidha Duir and Nuinn, or Oak and Ash. Their symbolic use within our Grove Sigil can be found in this article: Symbol of the Grove
Which is also somewhere in the Grove blog
However, little did I know until tonight, whilst discussing Solstice plans with a friend, that there is a living embodiment of the combined Duir/Nuinn characters in a conjoined tree near Earl Shilton in Leicestershire (approx 15 miles from where I live). The Oak and Ash have been growing together for the best part of 200 years and essentially have formed into a single tree.
You can read the full story and the folk tales here: