River

River

The Doctor and her parents left her to make her own way in the universe . With no connection to her family or the Silence, River became an archaeologist , ostensibly to track the Doctor through time. She crossed the Doctor's path on several occasions, generally with the result that she was meeting him at progressively earlier points in his own time stream . Hoping to avoid temporal paradoxes , the Doctor gave her a diary to keep track of their meetings and to prevent her from revealing " spoilers " to him about his own future.