I've just been thinking about the ages of Obi-Wan & Anakin. The age of Obi-Wan relative to Luke in ANH - he must be in his 60s, right?

I think that Anakin should be the same age as Obi-Wan. Sebastian Shaw was clearly cast for that reason.

This means that, with Luke & Leia at about 18-20 years old in ANH, this means that Obi-Wan & Anakin should be roughly in their 40s when Episode III ends. This also means that Anakin & Padme have to be together up to that point for Luke & Leia to be conceived.

You might get away with them being mid-30s and Obi-Wan in ANH being mid-50s.

Any thoughts?