In 1808, six Democratic-Republican electors (all from NY IIRC)cast their presidential EVs for VP nominee George Clinton instead of for presidential nominee James Madison; three of them voted for James Monroe for VP, but the other three voted for Madison for VP. Still, that was six faithless Madison electors.
In the 19th century, there were numerous instances in which many electors, and sometimes entire state slates of electors, voted for a different VP candidate than the one on the ticket, and it wasn’t always the case that the state party had nominated a different ticket. For example, in that 1836 election that you mentioned, VA’s entire slate of Democrat electors—I think that it was 23 in total—voted for William Smith instead of for VP nominee Richard M. Johnson because Johnson had an octoroon (1/8th black) mistress and they refused to vote for someone that practiced “miscegenation.” You’ll find a lot more instances of faithless electors on the VP side.
In 1896, the reason why two states (CA and KY IIRC) cast a single presidential EV for Bryan but the rest for McKinley is that those states (and many others in those days) elected the presidential electors individually and, with McKinley’s margin in the district being so close, one of the Bryan electors in each state was able to get elected. There also was a large number of Democrat electors voting for Thomas Watson instead of for Arthur Sewall for VP, and I believe that you are right that it was due to Democrat-Populist fusion electors.
Drat, I didn’t know about the 6 electors in 1808.
I guess Hillary has to settle for 2nd place again. ;D
BTW the Texas elector that voted for Ron Paul has been identified as South Texas College Poly Sci Professor Bill Greene.