... I secretly think a child that sleeps from 7-7 is a myth made up by delusional sleep deprived parents although I am willing to concede that they maybe do exist, I just got a very short straw when it comes to children & sleep...
Slightly OT - they do exist. My niece, coming up to 5, sleeps 7-7 every night, rarely wakes. Non-kinder days (4 out of 7) she has a nap. Anything from one hour to three. And still goes down at 7, and sleeps til 7.

I kid you not.

ETA - my kids, though genetically made from similar material, do not do this. My big two have only just gone down about 9.30pm after DS1 had a twenty minute nap in the car and DD decided if he wasn't sleeping, she wasn't sleeping either. And they will still be up in the morning at 6.30.