Dead Settler
Once you complete your Jedi training, you'll be able to find the body of Casus Sandral on the eastern side of the Matale grounds. This is the scion of the Sandral family, son of Nurik, who would appreciate learning of his son's fate. You can visit him in his compound in the Sandral Grounds to deliver the unfortunate news.
Note that this quest must be completed before you finish the Sandral-Matale Feud side quest.
Missing Companion
Elise is also found in the courtyard; she, too, has a favor to ask. Apparently a house droid that her husband created for her has wandered off/been stolen/disappeared/whatever. Your quest is to find out what happened to it and retrieve it for her.
C8-42 is found in the Sandral grounds, attempting to commit suicide by goading a group of Kath hounds into attacking. To achieve a favorable Light side result, destroy C8 and agree to tell Elise that he's dead. She'll appear to be devastated by the news, but will hook up with a friendly male settler later on in one of the apartments in the Jedi Enclave. If you seek maximum Dark side points, you should destroy C8, and brag to him that you will tell Elise he's still alive. Then follow through by telling Elise that he's still out there somewhere. She'll continue looking for him forever, leading a hollow, empty, meaningless life, devoid of the richness of human contact, until she finally withers away, her last breath a gasped plea for the presence of the beloved droid you destroyed those many years ago. You filthy scum.
Sandral-Matale Feud
Speak to Ahlan Matale at his estate in the Matale Grounds once you have activated the quest after the third Jedi Test. He will relate the story of the disappearance of his son Shen, and insist that the Sandrals are to blame; he'll even offer a bit of a reward for his safe return. Demand more of a reward for an extra Dark side hit.
Head south to the Sandral grounds to speak to Nurik Matale. Or, that is, attempt to speak to him; he rather curtly asks you to leave once after you begin asking him about Shen's disappearance. Luckily, his daughter intercepts you before you are forced out the door, and informs you that yes, indeed, Nurik has kidnapped Shen, as a result of his belief that Nurik kidnapped his own son, Casus. What a wicked web we weave.... The daughter, Rahasia, will give you a key to the compound's other door and ask you to rescue Shen before her father decides to harm Shen.
Head around to the side entrance and proceed back into the compound. Explore the area thoroughly, destroying the war droids that populate the estate, and you should eventually find Rahasia's room, as well as a room that's marked out as a holding cell on your map. One of the Security Rooms in the southwestern corner of the estate contains the Prison Key you'll need to rescue Shen. Talk to him; he'll tell you he's not going to leave the estate unless Rahasia comes as well. Speak to her, and she'll agree to this. Save your game, and then talk to Shen one more time to exit the compound.
Of course, no daring escape is ever quite as easy as it seems in the Star Wars universe. As soon as Shen and Rahasia meet up outside the Sandral compound, their fathers will approach, intent on settling their feud and preventing their children from seeing each other. Your conversation decisions in the mediation will result in one of five outcomes, from a good Light side bonus to a very gruesome Dark side bonus.