The current content model of <person> allows for structured content (persName, birth, sex, etc.) or prose (p, ab), thus prohibits the addition of some essay-like prose to (normalized) structural data. This issue has been around for some time (see "Prosopography" Wiki page) and was currently discussed on TEI-L
I have no final solution to this issue but I think it would make sense to discuss this in the context of rationalizing the content models of the fellow elements place/org/event/object(?).