There are some of these in the Star Wars Expanded Universe.
- In Shadows of the Empire, set some time before Return of the Jedi, the real villain of the book, Prince Xizor, does not get along well at all with Darth Vader. But they don't start to openly oppose each other until Vader finds that Xizor is trying to arrange for Luke Skywalker's death.
- By the time of a civil war between Corellia and what used to be the New Republic, Wedge Antilles is about sixty years old and has a pair of twenty-something daughters, Syal and Myri. Myri gets to stay with him on the Corellian side, where he spends about half of the series, but Syal is on the other side. And Wedge respects this, although it saddens him. He's very close to his daughters, and very protective of them.
Thrackan: "General Antilles, acting as Chief of State and Minister of War for Corellia, I hereby order you to communicate with your daughter Syal and do your genuine best to persuade her to follow whatever course of action I recommend to her. Is that clear enough?"
Wedge: "Go to hell."
Thrackan: "Antilles, you've refused a direct order given during a military crisis, and I have it on record. Should I choose to, I can have security agents haul you away right now. I can conduct your trial within the hour and have you executed by morning."
Wedge: "Of course you can. You could also have me assassinated in a time of peace for having nicer hair than you. If I worried about that sort of thing, I'd never get any sleep."
- Woe to you if you mess with anyone in Mandalorian Kal Skirata's biological or adopted family.
- Speaking of Mandos, Boba Fett in Bloodlines is this. So is Han. They team up.
- Speaking of Boba Fett, he was never a very good father (or husband), but he did his best to get close to his granddaughter, Mirta Gev. When he learns that a young Mandalorian is planning to marry Mirta, he gives his assent, but warns "Break her heart and I'll break your legs."
- This is part of the reason why Jacen Solo turned to the Dark Side and became the Sith Lord Darth Caedus, in addition to the Well-Intentioned Extremist trope: When he saw into the Pool of Knowledge and saw a man clad in Dark Armor (later revealed to be Darth Krayt) sitting on the Throne of Balance and seeing Allana, his daughter, standing by his side, he decided to become a Sith Lord in order to prevent that future from occurring, or at the very least prevent the part of the future where Allana is evidentially serving Krayt as his right-hand servant.
- In Galaxy of Fear, Hoole is... not a great uncle to Tash and Zak. He's pretty distant and gets irritable when they ask questions. However, he does take their welfare seriously and will readily threaten anyone who seems like a danger to them. Hoole is also a shapeshifter, and his favorite "strong form" is that of a Wookiee.