No, their mother and her people only took advantage of the gifts nature offered them. They themselves never had any magic of their own and when Elsa showed up and had magic they were fairly shocked and confused.
Elsa's Mother Already Comes From A Magical Background
While the original Frozen implies that Elsa is the only magical member of her family, she discovers that her mother was one of the Northuldra in Frozen 2, and likely interacted with magic regularly.
In Frozen 2, it is revealed that Iduna was apart of the Northuldra before the war between them and Arendelle. During the battle, Agnarr was knocked out, but was saved by Iduna (with the help of her friend, the Wind Spirit Gale). Because of Iduna's bravery, nature rewarded her by giving her first daughter ice powers.
After a battle broke out between the Arendelle castle guards and the Northuldra, Iduna called upon the wind spirit and saved the young Prince Agnarr.
After Elsa and Anna's mother saved her husband when they were kids, the forest rewarded her by gifting her child with the power of ice and making them one of the spirits of the forest. Elsa was her parents first born, so she got the powers.
She was born with the powers to manipulate ice and snow and, as a child, used them to entertain her sister. However, after Elsa accidentally hurt Anna with her powers and Anna's memories had to be erased, she grew afraid of her powers and was unable to appropriately control them.
Piebaldism is from a dominant gene causing mutations of skin and hair color. Patches of white appear on various parts of the body with a white forelock or streak somewhere in the hair, just like Anna in Frozen. Many adults would not think of this streak as disabling.
In Frozen 2, Elsa dies and comes back to life, revealing not only is she the fifth spirit - alongside water, earth, air, and fire - but is immortal. With Frozen 2 digging into her origins and putting her through a transformation, Elsa is now immortal, taking her place as more of a spirit than a person.
Iduna looks troubled, and she says to him, "I need to tell you about my past, and where I'm from." This means that, at that point, Agnarr didn't know about Iduna's Northuldra background, or that she was the one who saved him in the forest all those years ago.
While the voice was calling Elsa to reveal her past to her, it was ultimately revealed that Queen Iduna (Evan Rachel Wood) - Elsa's mother - had a lot to explain as well. This, coupled with the reveal that the call was Iduna all along, means Elsa was hearing the voice of her long-lost mother.
The ice from which the palace is constructed is capable of taking on different colors, such as purple, blue, red and yellow, based on Elsa's emotional state (blue when she is happy or neutral, yellow or amber when she is angry, and red when she is frightened).
Years later, Ingrid is accidentally released by Hans, who had attempted to use the urn to capture Elsa. Ingrid freezes Hans, revealing herself to possess ice powers like Elsa's.
“Kristoff may not have initially known that he had seen the royal family as a boy. But because he grew up with the trolls, he would have asked about what he saw and learned the truth. In that case, Kristoff had learned that Elsa had ice powers and Anna was healed by Pabbie before.
After Elsa finds out she is the fifth spirit in Frozen 2, a new Disney+ short reveals that Elsa wasn't the first fifth spirit to unite the elements. Frozen 2 revealed that Elsa is the Fifth Spirit — but not the first. Frozen 2 expands on the lore and people of Arendelle and delves into the franchise's elemental magic.
There are only a few other Princesses who also have magical powers and would be able to put up a fight against Elsa, but even they wouldn't be able to beat her. Rapunzel's hair-powers are impressive in Tangled and she has magical healing abilities.
Under this stress, Elsa accidentally injures Anna with her powers. Their parents, the King and Queen of Arendelle, take Anna to the magical trolls who heal her but also alter her memories so that she has no knowledge of Elsa's powers.
Chris Hemsworth and Elsa Pataky are still going strong after over a decade of marriage.
Despite Frozen making his emotional connection to his adoptive family clear, Kristoff's biological parents remain a mystery. They received little acknowledgment in Frozen II or any of the franchise's spin-off books, leading fans to theorize he could possibly be related to the Northuldra people seen in the sequel.
Their mother, it turns out, was a tribe member who saved their father during the battle, escaped with him out of the forest, and later married him. Wait, that's a lot of information to take in. So Anna and Elsa have been secretly descended from an indigenous tribe all this time? Yes.
According to Myth: A Frozen Tale, the fifth spirit is also known as the “human spirit”, but it is assumed to have been represented by humanity in general before Elsa and Anna's births. According to Northuldra legend, the spirits' mother is Ahtohallan.
She died and was reborn to take on her true form like has happened in so many stories before. With that transformation, Frozen 2 has made Elsa an immortal spirit now.
Anna doesn't find out about Elsa's powers again, until much later at her coronation, three years after their parents died in a shipwreck. But a deleted scene, in Frozen 2, reveals that right before her parents left on that journey, they had plans to reveal the truth.
Anna. If you haven't seen Frozen 2, you may be wondering, wait– how come Anna isn't a princess? Well, after Elsa was crowned as queen of Arendelle, she then resigned to become the fifth spirit, and Anna took her place. This made Anna the queen, and you simply can't be a queen and a princess all at once!
Anna broke her own spell: saving Elsa was an act of true love. And her hair turns back to normal and her streak is gone. It is then that Elsa realizes what can end the winter: love.
Actually she's strawberry blonde. You know it really does not matter how it look in the picture from the movie (Cinderella looks ginger too), because it's all about what her official hair colors is, and they said and show it in the promotional pictures, that this is strawberry blonde...