Re: A Song of Ice and Fire/Game of Thrones Spoiler-Filled Discussion
In that instance the person doing the legitimizing would presumably be the one who already holds (or claims) the throne, so it's not really clear why they'd want to legitimize a rival claimant.
In the case of Stannis for example it might simply be the need for a designated heir (given Shireen's condition).
'Spock is always right, even when he's wrong. It's the tone of voice, the supernatural reasonability; this is not a man like us; this is a god.'
- Philip K. Dick