How would A Pc react to the following revelation?

marshalljames1

Another question from The GM that had Delphini and the other 3 in Warhammer Roleplaying, this time its 1st edition DAD but they've kept the names, and this time its Erin The Fighter, Nina The Thief, Kai The Cleric, Delphini The Magic User and they've got another Fighter called Ash, yes he's named after Ash off of Pokemon

So 

They will soon be starting A 1e DAD Campaign, The GM made a lot of very detailed tables and charts to determine A Pcs background and Kai/The Cleric ended up with a unique.

The question my mate/The GM, has is how would A Pc that's a former slave react when he realize's that he's his homelands rightful king, that when he was 4 months old his homeland lost a war and that to protect him from the victorious invaders, who because of the actions of The Pcs father actually were justified in invading and conquering The Pcs homeland, he was swapped with a slave, which is why he spend 12 years, 4 months as a slave

Brief summary

Basically he's the crown prince and rightful king of a country, before he was even 5 months old his homeland lost a war, and as the countries crown prince he would have been put to death but by sheer luck 1 of the royal families slaves had 2 kids, that were also slave's, that were the same age, 1 was a boy that bore a uncanny resemblance to the crown prince, which allowed the chancellor to protect the 4 month old crown prince by swapping him for a 4 month old slave that looked enough like the crown prince for it to work

Full summary

A country is invaded, its clear that its going to lose, the kings 4 month old grandson is the last living member of the royal line

By sheer chance 1 of the royal families slaves has 2 4 month old children, 1’s a girl and the others a sickly boy that will be dead in less then a week who by sheer chance looks enough like the crown prince for their to be 1 chance of saving the crown prince, which is to swap him for a slave that's the same age that looks enough like the crown prince for their to be a chance tha it may work

So in a last ditch attempt to save the crown prince they swap the 4 month old crown prince for the 4 month old slave that bears a strong enough resemblance to him that it could work

It works, I mean did you really think it wouldn’t?, I mean seriously? what villain in their right mind would think a country would protect the 4 month old crown prince by swapping him with A 4 month old slave?

Luckily after the countries conquered all slaves of that country are given to owners from the conquering country, by sheer luck most of them end up with kind owners

The crown prince, who is now A Slave due to the fact that for his own safety he was swapped with a slave, his surrogate slave mother, that everyone thinks is his mother, and his surrogate slave sister, that everyone thinks is his sister, end up with a kinder owner then most

The best bit is that by the time their both 12 years, 8 months old, the crown prince, who is, now was a slave, that for his own safety was swapped with a slave and his surrogate slave sister, that everyone thinks is his sister, have been freed

They are even being paid to be friends, companions and playmates to the 10 year old Baroness that acquired them after her father, their previous owner, died but by the time she inherited them she liked them enough to free them