A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
A player, 19 March 2013
Can I declare Proclaim when I use the Shiro Kitsuki ability of bringing an attached samurai into play?
-- Shiro Kitsuki After players reveal Strongholds: Search your Dynasty deck for four different non-Unique Dragon Clan Samurai Personalities. Attach one to each of your provinces, face-down and out of play. Battle: Once per battle, target a face-down Personality attached to one of your provinces: If there are any enemy units at the current battlefield, bring him into play there, ignoring costs. You may take an additional Battle action. Remove the Personality from the game after the battle ends.
Proclaim Reaction: After you bring a Personality in your province with your Clan alignment into play without Clan discount, if it is your turn: Gain Honor equal to his base Personal Honor.
Ben Higgins (rules official), 19 March 2013
Can I declare Proclaim when I use the Shiro Kitsuki ability of bringing an attached samurai into play?
-- Shiro Kitsuki After players reveal Strongholds: Search your Dynasty deck for four different non-Unique Dragon Clan Samurai Personalities. Attach one to each of your provinces, face-down and out of play. Battle: Once per battle, target a face-down Personality attached to one of your provinces: If there are any enemy units at the current battlefield, bring him into play there, ignoring costs. You may take an additional Battle action. Remove the Personality from the game after the battle ends.
Proclaim Reaction: After you bring a Personality in your province with your Clan alignment into play without Clan discount, if it is your turn: Gain Honor equal to his base Personal Honor.
No. In the same way that a Region attached to a Province is not considered in that Province, a Personality attached to a province by Shiro Kitsuki is not in the province.