Iris comes from Greek, named for the goddess who carried messages between gods and mortals along the rainbow, and the name is traditionally associated with communication and connection across distance. It's often read as suggesting someone who bridges different worlds rather than staying fixed in one place.
The dominant star being in the Midheaven, exalted or in its domicile and taking part of the ascendant. - Picatrix (Andalusia, ~1000.AD)