For the purposes of this section and, sections 169B to 169D ... , a person is a settlor in relation to a settlement if—
he is an individual, and
the settled property consists of, or includes, property originating from him.
In subsection (1) above, the reference to property originating from a settlor is a reference to—
property which that settlor has provided directly or indirectly for the purposes of the settlement, and
property which wholly or partly represents that property or any part of it.
In subsection (2) above, the references to property which a settlor has provided directly or indirectly—
include references to property which has been provided directly or indirectly by another person in pursuance of reciprocal arrangements with that settlor, but
do not include references to property which that settlor has provided directly or indirectly in pursuance of reciprocal arrangements with another person.
In subsection (2) above, the reference to property which represents other property includes a reference to property which represents accumulated income from that other property.