This might be a hard question to answer because there was no form of recorded sound, but if anyone has any information on the topic I would greatly appreciate it.
hi; the question of divergence of "American accents" from "British/English" ones is pretty common in this sub; there a couple of TL;DRs in When did American colonists lose their English accents?. Any expert info on the accents of specific individuals is welcome, but the FAQ section linked in the post provides a general overview.