Heath Ledger's uncle is putting the rumors that Heath had a love child with another woman to rest.  He tells Us Weekly that it was just a rumor, and the story was taken out of context.  He also says Heath was a young attractive guy who attracted lots of women, so that's why they entertained the idea being true earlier in the week. 

The rumor is that Heath had a relationship with a woman in 1996 when he was 17 and she was 25. The woman had a daughter after they broke up.  The woman is denying Heath is the father, and is also refusing to take a DNA test. 

So it seems like the rags are just desperate to make a story out of nothing. It would be one thing if she was insisting Heath was the father, but she's not.