Old Tree Branches (Cliftonville CT9)

4 bags of VERY OLD tree branches and quite a few unbagged ones that have been unearthed while tidying up a very overgrown garden.
I wondered if maybe they'd be ok in an outdoor fire pit, but I've got no idea about what kind of trees the branches have come from or what is OK to be burned in a fire pit.
These are for COLLECTION ONLY and all 4 bags and unbagged ones must be taken together.
Also please don't say you'll have them and not come to collect them, as the bags are quite heavy and I can only move them once.
Thank you.