restore_dumnonia_decision_scripted_effect

restore_dumnonia_decision_scripted_effect = {
	save_scope_as = founder
	create_title_and_vassal_change = {
		type = created
		save_scope_as = title_change
		add_claim_on_loss = no
	}
	title:k_cornwall = {
		change_title_holder = {
			holder = root
			change = scope:title_change
		}
	}
	resolve_title_and_vassal_change = scope:title_change

	hidden_effect = {
		title:d_somerset = { save_scope_as = cornwall_somerset }
		title:d_gloucester = { save_scope_as = cornwall_gloucester }
		title:d_cornwall = { set_de_jure_liege_title = title:k_cornwall }
		if = {	#If owned, annex Somerset/Wessex.
			limit = {
				title:d_somerset = { holder = root }
			}
			title:d_somerset = { set_de_jure_liege_title = title:k_cornwall }
		}
		if = {	#If owned, annex Gloucestershire/Hwicce.
			limit = {
				title:d_gloucester = { holder = root }
			}
			title:d_gloucester = { set_de_jure_liege_title = title:k_cornwall }
		}
	}
	custom_tooltip = restore_dumnonia_decision_effects_de_jure_tt
}

As written in game/common/scripted_effects/00_major_decisions_scripted_effects.txt.