Re: DragonAgeKeep only find my one unimportant warden from Origins, not the rest

The Keep doesn't actually get any of the game choices you made in the first two games, you have to fill them in yourself, so the only difference having your own Warden (or Hawke) makes is having their portrait and name in the Keep (in Inquisition they're referred to as Hawke, the Warden, the hero of Ferelden, or Warden Commander <last name determined by your Origin>).
If you really must have your Wardens in the Keep, you must play Origins logged in to the same EA account (remember, your password cannot contain any special characters if you want it to work in Origins, leaving your entire EA account somewhat less secure), make sure you don't have the developer console enabled (as this prevents you from connecting to the servers), and play long enough for it to (hopefully) upload your profiles to bioware social. It may not work at all, I haven't tried in a long time (due to my password not being compatible with Origins).

Your other option is to use the default heroes. You can change their names if you wish (go the 'Heroes' section of the Keep, make sure 'default heroes' is checked, and click the one whose name you want to choose. Click the little pencil icon next to their name, type in the name you want, then click the little tick to the left), and if you want to go through the hassle you can also change their portrait (just click on it). 

Hope that helps. 🙂