I found a site: http://freepages.genealogy.rootsweb.ancestry.com/~poindexterfamily/OldNames.html with a long list of names ganked from actual period records, but I'm not sure what of them would/would not be used in the US, and/or could be indicative of class/wealth/status. For a modern example, you probably wouldn't find a middle-class white kid in the US named Aaliyah. I tried a little googling with things like "victorian names class", but didn't find anything likely.
As a bonus, I'd like one era-appropriate name (preferably female) belonging to a vaguely plausible Significant Minority, probably Asian. I'm aiming for a name that very clearly indicates This Is Not A White Person, but as long as the person could plausibly have been in the US and working as a lab assistant somewhere between 1840 and 1890, origin is unimportant.
(this is mostly for amusement value--my character mixes up her assistants' names, and I want to throw a One Of These Things Is Not Like The Others name into the mix)
This doesn't have to be Perfectly Accurate, it's an RPG, not a novel, but I'd like to not be glaringly anachronistic, if I can avoid it.