Only one minor problem I see for criteria (1):
- Is Irvine's brother 'Nicholas' or 'Nicky'? The article uses both. Any chance of citing one canonical first name?
Everything that looks controversial is sourced with in-text citations. Criteria (2) passes.
The article was much longer and has had to be reduced in size. Obviously meets criteria (3).
Neutrality disputes seem to have been resolved on the talk page (4).
No major content disputes recently (5).
All images are freely licensed (6a), captions are good (6b).
Problems identified in WP:PR have been fixed.