Skyrim: Find Amren's Family Sword inside Redoran's Retreat

To find Amren's family Sword first travel to Redoran's Retreat. It's directly west of Dragonsreach and East of Greenspring Hollow. If you ever need to find mammoth tusks or want to fight Giant's just for fun travel to this area, there's plenty of them here. Once you retrieve the sword you must take it back to Amren. He has a house in Whiterun, if he's not there you'll have to look for him on the streets. Luckily you can see exactly what he looks like in this video so it should be easy to find him.