A673: Well, Siamorphe has both domains, but she's a demigod. Helm, the Red Knight, and Ilneval(orc god) all have the Planning domain, which is the harder of the two to find. But you could just simply be a Cloistered Cleric and get the Knowledge domain for free.
Note: All of those gods were from the Forgotten Realms Campaign Setting, because that's the only book that was near me, so I'm not sure if there are any more.