Coming to a halt at the front of the ballroom, Reginald Prince's dark eyes scanned the assembly before bowing his head in polite greeting. "Thank you for accepting our invitation," Reginald said as the crowd courteously bowed their heads back.
"For those that are in mourning as we are," Reginald paused to bow again, "The Prince's thank you for your presence despite your tragic loss."
Straightening up, Reginald's cold dark eyes raked over the crowd. "I have not invited you all for pleasantries, but rather a solemn declaration of war. I ask that we unite together and clasp hands firmly in these troubled times."
"For thousands of years, there has been an unspoken code among us to never attack even the worst of enemies during a wedding or a funeral. These are considered to be solemn and sacred occasions," Reginald said earning murmurs of agreement. "Yet our purest of traditions have been trampled upon by some of our own kind who claim to follow a so-called Dark Lord by the name of Lord Voldemort."
A hush falls over the crowd, especially by those that are keenly aware of the existence of Lord Voldemort. "I am not requesting that we rise up and fight, but rather we turn over any traitors among us to the proper authorities," Reginald matter-of-factly stated to the relief of many.
"And dissuade any of you who might foolishly consider joining this self-crowned Dark Lord," Reginald brusquely said to the shame of several of those present. "I know that several of you must be in contact with or even know of this so-called, Lord Voldemort. I also know that several of you, despite my warning, there are those that will continue to be tempted to follow him based solely on his claim of being Salazar Slytherin's heir. For those that do not know, this Lord Voldemort is in fact a parselmouth."
A gasp goes through the crowd as Reginald firmly squashes any doubters with a swift counter. "But Salazar Slytherin was not the only parselmouth to exist during the 16th century. I need not remind you of Paracelsus, a genius medical healer, and alchemist. He was in no manner whatsoever related to Salazar Slytherin and yet he was born with the gift. Regardless of what house we belong to we are all purebloods and should know better than to trust such a claim without proof."
Reginald paused for dramatic effect forcing those in the audience to intently lean forward to listen. "If he truly is Salazar Slytherin's heir, why does Lord Voldemort frolic in the shadows, why not proudly announce his claim? And most importantly why order such foul deeds to be committed in his name? Most of us would have willingly sided with the Dark Lord and yet his actions prove otherwise. I do not believe this Lord Voldemort could ever be the rightful heir of Salazar Slytherin unlike our family, the Prince household, who can proudly prove our blood right."
There is a breathless silence as Reginald flashes a cold wolfish grin. "I know that it seems outlandish and impossible to make such a claim, but we are. Unlike some wizard families, we can trace our family all the way back to the Romans, when our ancestors first came to this land as legionnaires. Oh, yes, the Princes can trace our lineage for over three thousand years."
Turning to his sister, Reginald says, "Georgine, if you would please."
Georgine pulls out a shrunken tapestry roll, before beginning to unfold the long roll across the ballroom floor. Even shrunk the roll made its way across the third of the ballroom. The instant the enlarging spell was cast the tapestry crossed the full length of the ballroom and then began to curl around the entire length, before ending at the feet of the one the guests.
There is an incredulous silence as Reginald walks down halfway to the tapestry and raises it in the air. "Before we were Prince's, we were once called, Hassan's."
The crowd gasps at the Prince's openly acknowledging that they were descendants of the Percussors. Even if there were other descendants still living none of them would ever claim to be a descendant of the assassination wizarding clans that had once existed. However, each and every single wizarding clan had been destroyed by the founders.
"Yet our forefather, Salazar Slytherin came to love our foremother, Lamia. As such a pact in secret was made and we swore to never kill again for coin. Unfortunately, the circumstances were not in their favor, and they were forced to separate. Lamia and those remaining of our family fled to Gaul also known as France now-a-days.
There she bore him a son, Salazar Prince named after his father and his clan. For Salazar Prince was the clan's last male heir, their little prince, so to speak. As such we changed our names from then on to Prince to recall our ancestor's sacrifice and so we have remained as Prince's ever since then," Reginald said as he gazed at the family tapestry.
"And unlike the so-called heir of Slytherin, we the Prince's can provide further proof," Reginald said as he gestured for Tadbey to come forth. The purebloods are much too shocked at this point that seeing a house elf in mourning clothes didn't seem that strange at all.
Reginald reverently opened the heavily enchanted wooden box that only the Prince head could open. Inside the small wooden chest were two items, a silver dagger, and a gold pendant. With care, Reginald removed the silver dagger encrusted with emerald gemstones in the figure of a snake that went across the handle.
Holding the silver, goblin-forged dagger in the air, Reginald says, "This belonged to our forefather Salazar Slytherin, who most generously granted us these heirlooms." This is all true, however, the items at the time had been handed over as payment for services rendered rather than as a family heirloom. But some things are best left unsaid, it would not further their cause.
Reginald walked over to Arcturus Black much to the surprise that knew them. Since the two men had an antagonist relationship since young. "You've seen more artifacts than I can count, Arcturus Black. Is this a true relic or not?" Reginald asked as he carefully placed the silver dagger into Arcturus shaking hands.
Arcturus' hands shake as he carefully studied the dagger. He brought the dagger near his nose and found perfectly carved shinning curved letters on the dagger stating the name of the owner, Salazar Slytherin. Pouring a bit of magic into the dagger, Arcturus can still feel the way the dagger was forged and who it was forged for.
Arcturus lets out a gasp of wonder, "It is real! It is Salazar Slytherin's dagger!" There is a rush of whispers as Arcturus reverently hands the dagger to the elder Mulciber at his side, who seemed to be in shock.
Reginald returns to the box and grabs the golden pendant from the box. "And like the first Prince, his wife, Magia was special in her own right. For she was the child of Merlin Ambrosius himself." Reginald held the glittering pendant in the air before the transfixed crowd. Walking over to Arcturus once more, he handed over the gold pendant as well.
Arcturus reverently took the golden pendant, before with a trembling voice confirming the verdict. "The pendant indeed belonged to Merlin Ambrosius's." That heirloom too was passed onto another pureblood who reverently took the golden pendant. The air in the ballroom seems faint in the room as if the wizards and witches and attendance can't take much more surprises lest their hearts give out!
Other than Herpo, The Foul, and Salazar Slytherin, and his descendants, the Gaunt Family. Paracelsus is another famous parselmouth. I'm fairly certain there are probably more parselmouth's out there, but they wisely keep to themselves. Or live in areas in parts of the world where they might be revered such as India.
For more info: https://www.wizardingworld.com/features/everything-you-didnt-know-about-parseltongue