the Gods are individual natural, ancestral and cultural forces personified and so while I do call them by names, its the power and personality behind the name that is more significant to me. So yeah Brighid is the personification of non-destructive fire and water and is also the patron of my sacred home land, the mystical aspect of Ireland—as well as the physical Ireland. Non-destructive creative fire: forge fire, fire in the head (poetic inspiration), and warming heat of healing. Water in the well, water in the spring, water in the lake, versus water of flooding, nor water of drowning.
To me the Morrigu are the forces of the favored side in a war, carrion birds after battle, of battle over whats right redeeming the land, sovereignty and sex—specifically consensual sex granted and consensual rulership of the land and then revenge for disregarding that sacred pact.
As the Morrigu includes Anu, and Danu in some points, and Dagda is Brighids father and Morrigu his sometimes consort. Sometimes I wonder if perhaps one of the Morrigu is the mother of Brighid. And that makes sense to me.
Although their names are significant to me, if I found out tomorrow that the names were wrong or misapplied, the forces and figures behind the names would still sing to me.