Hey brianh,

Please note, 'relations'(here: tags) are not categories
https://wiki.openstreetmap.org/wiki/Relations_are_not_categories
The "noble" designation seems to group whole types of trees together based on their size and/or fruit.
This may be a notable category ('relation') on Wikipedia or Wikidata, not on OpenStreetMap; it is based on subjective, not objective, verifiable details.
It is potentially duplicating information which could be derived from the wikidata (or wikipedia) tag, or for experts from the genus, etc. tags.
Similarly, a tag 'division:beautiful=yes' for numerous types of trees on average with a certain height or fruit, contains basically no useful information. This information can already be derived from existing tags.

Also, OpenStreetMap is not OpenHistoricalMap, it can't cover all historical data. As far as I can see this is based on a historical law from the 7/8th century, of which I'm unsure how much is still present in modern law.
( https://www.forestryfocus.ie/social-environmental-aspects/cultural-heritage/trees-and-folklore/brehon-laws/ )

This is different from monumental/heritage trees, which have a -current- official, usually legal, protection or designation.
(though often this coincides with a type of tree as well)

I would suggest to reconsider adding such data to OpenStreetMap, also in the future.

Regards,

Daniel