interestingasfuck

Both, I would think, but I'm not a linguist haha. Overall, American accents were different when he grew up and lived as opposed to now, like you mentioned. He was also given a "gentleman's education" after being orphaned as a kid, so I'm sure that helped curate how he spoke (especially drunk and during his first public speech lol). But when this was recorded, he had already lived in England for 15 years - so he naturally picked up some of the accent.

Source: I'm a sucker for Wikipedia, also https://www.loc.gov/static/programs/national-recording-preservation-board/documents/1888LondonCylinderRecordings.pdf 😁