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, 22 March 2014
Is a stronghold considered a holding for the purposes of this stronghold's limited action?
Limited: Target a Holding. Either give it +1 Gold Production, or increase Honor gains from its abilities by 1 (this turn).
Oracle of the Void: The Exquisite Palace of the Crane
Brook Cunningham (rules official), 22 March 2014
Is a stronghold considered a holding for the purposes of this stronghold's limited action?
Limited: Target a Holding. Either give it +1 Gold Production, or increase Honor gains from its abilities by 1 (this turn).
Oracle of the Void: The Exquisite Palace of the Crane
No, sorry. Strongholds are a different card type entirely from Holdings, despite the fact they both usually produce Gold.