Torsten had a daughter, Fjotli. She was killed by either The Butcher or the Summerset Shadows, (specifically, their leader, Linwe). Based on dialogue however it is more likely to have been The Butcher. However that information came from Niranye, who may have wanted the identity of her murderer to be unknown.
Ulfric: "I'm still not sure I understand what you're asking."
Torsten: "A navy, my lord. We could stop the influx of Imperial troops to Solitude, and choke their northern lines."
Ulfric: "But most of their supply routes come south, from Cyrodiil."
Torsten: "But imagine—fleets of ships sailing from Windhelm, all bearing the Stormcloak flag! It would be glorious!"
Ulfric: "And I suppose the Cruel-Seas would be just the clan to provide ships and men?"
Torsten: "You need but ask."
Ulfric: "I'll think on this, but I make no promises."
Torsten: "I can ask no more. Thank you, my lord!"
Farming equipment replacementEdit
Tulvur: "Sir, I'm going to need some better equipment if you want me plowing the frost."
Torsten: "Like what?"
Tulvur: "Well, some tools that aren't rusted through would be a start."
Torsten: "I'll provide you wood and timber to make whatever riggings you'll need."
Tulvur: "I'm not building a ship, sir. I'm trying to make things grow."
Condition of Hollyfrost FarmEdit
Torsten: "Tulvur! I've just completed inspection of the farmhouse."
Torsten: "It's filthy in there! Dirt everywhere, and it looks like the dogs have the run of the place."
Tulvur: "Well, sir, it's a farmhouse. It's not going to be as clean as your house in the city."
Torsten: "I just know that our sailors are able to keep their ship quarters clean, and I expect the same of you."
Tulvur: "I'll do my best, sir."
New batch of tomatoesEdit
Torsten: "How's business today?"
Hillevi: "Well enough, I suppose. Nilsine bought up most of the tomatoes, and was asking if we could get more."
Torsten: "We've got another dozen ripening on the vine. They should be ready in a few days."
Hillevi: "I'll be sure to tell her."