If Palps is Anakin's father, that makes him Ben's great grandfather. He's Rey's grandfather, which makes her Luke and Leia's 1st cousins, which means she and Ben are 1st cousins once removed.
Rey is the granddaughter of Emperor Palpatine. She is not biologically related to Anakin Skywalker.
Powerfully Force-sensitive, Rey trains to be a Jedi under siblings Luke Skywalker and Leia Organa, and faces adversaries such as Kylo Ren, Supreme Leader Snoke and the resurrected Emperor Palpatine—who is revealed to be her grandfather in The Rise of Skywalker.
Anakin Solo
Anakin is named after his maternal grandfather, Anakin Skywalker, and, like his namesake, is a talented pilot who is prodigiously gifted both in the Force and mechanical engineering.
Though initially trained as a Jedi by his uncle Luke Skywalker, Ben was seduced to the dark side of the Force by Supreme Leader Snoke, and aspires to be as powerful as his grandfather, the Sith Lord Darth Vader / Anakin Skywalker.
She does not have a baby bump, her hand never goes to her stomach to indicate she's carrying a child, and there wasn't exactly any time for her to have conceived a child with anyone in the course of the film, including Kylo Ren/Ben Solo.
Some have believed for years that Palpatine was revealing that Anakin was his "son." However, this is not the case, as Matt Martin clears up again. He explains. "He doesn't literally say that. It can certainly be inferred, but he doesn't say it.
At the end of Star Wars: Episode II - Attack of the Clones, Anakin and Padme are secretly married.
The topic of who Anakin's father has been a subject of discussion for some time. Star Wars: Episode I – The Phantom Menace touched on this by explaining that there was no father. His mother Shmi told Qui-Gon this by simply explaining that she carried him, gave birth, and raised him.
She was recovered from the Tusken Raider camp by her son, Padawan Anakin Skywalker, who returned her body to the Lars farm after slaughtering the Tuskens within the camp. Shmi was buried at the farm with a gravestone marking her grave. After her husband Cliegg Lars died, he was buried next to her.
In addition to rejecting Sidious, Dathan married a woman named Miramir, whom he fell in love with. Together, they conceived a child, their daughter Rey, who was born in 15 ABY. Although he renounced the Sith Eternal and his donor, the Palpatine bloodline would prosper through him, just as Sidious predicted.
In The Rise of Skywalker's novelization, we learn that Rey's father was a failed clone of Emperor Palpatine. He was initially created to be a vessel to house Palpatine and his Sith power.
Rey's father was the cloned son, artificial genetic strandcast, of the resurrected Darth Sidious, making her the granddaughter of the fallen Galactic Emperor and Dark Lord of the Sith.
George Lucas himself has stated that Anakin is the Chosen One and that the prophecy is true, although it had been misinterpreted by the entire Jedi Order. Lucas believes that both the dark side—greed— and the light side—compassion—are integral parts of human beings.
What is the connection between Kylo Ren and Rey? As Kylo Ren himself says in The Rise of Skywalker, he and Rey are bonded not just by their familial legacies (Ren as the grandson of Darth Vader and Rey as the granddaughter of Emperor Palpatine) but by their unique connection in the Force.
However, her journey of self-discovery takes an unexpected turn when she learns that she also carries the DNA of Anakin Skywalker, the legendary Jedi Knight who was seduced by the dark side and became Darth Vader.
In The Phantom Menace, when Qui-Gon Jinn meets tiny Anakin Skywalker and his mother, he goes on about how the Force is like, crazy strong with Anakin or whatever, and then asks his mother about Anakin's dad. Shmi Skywalker is pretty clear in her answer: There isn't a father. She was impregnated by the Force.
Senator Padmé Amidala of the planet Naboo became pregnant during the Clone Wars with her husband, Jedi Knight Anakin Skywalker, as the father.
Of course, the Father almost immediately wiped Anakin's memory, because he couldn't very well achieve balance knowing what he knew of his future. That's very interesting, though. It means that the Father knew that Anakin will become Vader, will destroy the Jedi, will literally annihilate whole worlds….
The marriage, witnessed by the droids C-3PO and R2-D2, was kept secret due to Amidala's place as a prominent Senator in the Galactic Republic and because of Skywalker's membership in the Jedi Order; the Jedi Code prevented Jedi from falling in love and forming attachments such as marriage.
At first, most fans assumed Rey was the daughter of either Luke Skywalker or Obi-Wan Kenobi. And during a 2020 interview on Jimmy Kimmel Live, Ridley was asked if she knew about Rey's parentage from the beginning. She replied, "No.
Following the Wampa attack during the movie's opening scenes on Hoth; Leia, Han, and Chewie visit Luke in the infirmary. Leia is annoyed with Han, who insists she has feelings for him, so she kisses Luke to prove she doesn't. Presumably, the scene was simply meant to make Han jealous.
Yoda. Yoda's knowledge of Luke Skywalker's true parentage was also confirmed in Return of the Jedi. As with Obi-Wan, Yoda believed that Anakin's fall to the dark side made him unsalvageable, with the Darth Vader persona being his only identity following his ascension to Sith Lordship.
He was still completely unaware of the Sidious/ Palpatine connection until ROTS. He also said during TCW season 6 that the Jedi order must believe in the clones and end the war before the Sith's plans are realized.
Vader's Quest takes place before Star Wars #35 and is specifically set two months after A New Hope, giving it the most specific answer to when Darth Vader learned that Luke Skywalker is his son in the Star Wars franchise.