Response by Michael Cayley
Thanks, Todd, for asking. This profile needs an overhaul by the Magna Carta Project - it is in a long queue of profiles awaiting attention, and children will need to be checked out when that is done.
Richardson gives the following children (Magna Carta Ancestry, 2nd edition, Vol. III, pp. 285-286 and Royal Ancestry, Vol. IV, pp. 291-292):
By Elizabeth Mill: John, Humphrey
By Elizabeth Hussey: Thomas, Maurice, Nicholas, Henry, Alice, Elizabeth who became a nun, Margaret who married John Lisle, Joan who married William Doddington
Maclean gives no source for the (unnamed) daughter whom he ascribes to Nicholas's marriage to Elizabeth Mill and whom he says married John Codrington. What he says must be treated with caution. What Richardson does say is that a John Codrington married an unnamed daughter of Nicholas's son John. So it looks as if Richardson believes Maclean attached the Poyntz who married John Codrington to the wrong father. This obviously needs research.