Probably right. A BOA and xPF are quite similar...
"A bill of attainder was a legislative act that singled out one or more persons and imposed punishment on them, without benefit of trial."
"ex post facto. adj. Latin for "after the fact," which refers to laws adopted after an act is committed making it illegal although it was legal when done."
The Dunmore proclamation was a bill of Attainder.
Some like to claim it was the Brits freeing the slaves during the revolution. In fact it stripped patriots of their property, slaves included. Slaves were given to loyalist families and British officers and males were given a choice of fighting for the Brits with a promise of freedom or resold.
Interestingly enough, many who fought for the British were simply left here, fled to Canada and many who served on ships were resold in the Caribbean.
I didn’t realize the definitions were so close - thanks for the lesson!