外國網友: I think JKR did originally intend for Dorea Black to be James Potter’s mother. The family tree she penned in 2006 does show them having one son; which may or may not have been James himself.
However JKR is notoriously bad at maths, James’s parents were supposed to have been very old when they had him, yet Dorea and Charlus were born in 1920, making the both 40 years old when James was born in 1960, 40 isn’t old, considering that Remus was 38 when Teddy was born, and that didn’t seem unusual that he became a father two years shy of 40.