is_any_family_relation_or_spouse_trigger

is_any_family_relation_or_spouse_trigger = {
	save_temporary_scope_as = root_character
	OR = {
		any_parent = { even_if_dead = yes this = $CHARACTER$ }
		any_sibling = { even_if_dead = yes this = $CHARACTER$ }
		any_child = { even_if_dead = yes this = $CHARACTER$ }
		any_spouse = { this = $CHARACTER$ }
		any_parent = {
			even_if_dead = yes
			any_sibling = {
				even_if_dead = yes
				this = $CHARACTER$
			}
		}
		any_parent = {
			even_if_dead = yes
			any_sibling = {
				even_if_dead = yes
				any_child = {
					even_if_dead = yes
					this = $CHARACTER$
				}
			}
		}
		any_sibling = {
			even_if_dead = yes
			any_child = {
				even_if_dead = yes
				this = $CHARACTER$
			}
		}
		AND = {
			NOT = {
				any_sibling = {
					even_if_dead = yes
					this = $CHARACTER$
				}
			}
			any_parent = {
				even_if_dead = yes
				any_child = {
					even_if_dead = yes
					this = $CHARACTER$
				}
			}
		}

		#child/parent/sibling/nephew/grandchild/grandparent/uncle/aunt/niece/nephew is married to the other
		any_spouse = {
			OR = {
				is_close_family_of = $CHARACTER$
				is_nibling_of = $CHARACTER$
				is_uncle_or_aunt_of = $CHARACTER$
			}
		}
		$CHARACTER$ = {
			any_spouse = {
				OR = {
					is_close_family_of = scope:root_character
					is_nibling_of = scope:root_character
					is_uncle_or_aunt_of = scope:root_character
				}
			}
		}
		#child/parent/sibling is married to other's child/parent/sibling
		any_close_family_member = {
			OR = {
				is_parent_of = scope:root_character
				is_child_of = scope:root_character
				is_sibling_of = scope:root_character
			}
			any_spouse = {
				OR = {
					is_parent_of = $CHARACTER$
					is_child_of = $CHARACTER$
					is_sibling_of = $CHARACTER$
				}
			}
		}
	}
}

As written in game/common/scripted_triggers/00_family_triggers.txt.