Palace of the Breaking Dawn players normally have no clan alignment.
A player using an unaligned Stronghold (one with no Clan alignment) has no Clan alignment.
Open Recruitment
Until your Events Phase two turns from now begins, after each time an unaligned Human Personality turns face-up in one of your provinces, permanently give him your Clan alignment. He has sworn fealty to you.
But
Some card effects may grant Clan alignments on the basis of keywords outside the Clan alignments list. These keywords are only Clan alignments in games where those card effects apply.
Although Unaligned is not a keyword, the event is granting "your clan alignment." Would that event grant a "those card effects" application? Would the unaligned people that show up for those 2 turns gain a clan alignment that only applies to the player, in that game, despite not matching a great clan? For example, would a card effect that grants "my clan alignment" grant something akin to a temporary "Eric's Clan" clan alignment?