- Joined
- Apr 17, 2010
- Messages
- 1,636
- City
- Adelaide
- Country
- Australia
As the son of a Duke , he should be a Lord even if he didn’t use one of his father’s subsidiary titles as courtesy. There is no rationale to style him Master.
The rationale is that if Archie is known as Master, then it's the Queen's Will that he is known as that. It's the same argument why Lady Louise isn't styled as Princess of Wessex.