Yes, Osipi, Catherine would be good for a name, a nickname like Cathy which would result would be OK too. (nickname resulting from need to tell Catherine from her daughter in press reports). William is good and they could call him Wills since they don't often refer to Prince William as "Wills" any more. This is a very likely occurrence. I expect Prince Harry and Sophie Wessex to be godparents, and their names will appear in the lineup somewhere. But I think Sophia rather than Sophie will appear.
Someone mentioned Sophie as a possible name after the Electress of Hanover. Sophie Wessex would be honored as well, but I think the name would become Sophia. I expect the Wessexes to be active royals after the Queen and Phillip retire--I know someone said the Queen would never retire, but if Phillip is ill this may be considered. They will gradually take over the subsidiary royal spot the Gloucesters have occupied. I expect Lady Louise to make a significant marriage, possibly to a European royal personage. I'm on a roll. Tell me to stop.
Someone mentioned Sophie as a possible name after the Electress of Hanover. Sophie Wessex would be honored as well, but I think the name would become Sophia. I expect the Wessexes to be active royals after the Queen and Phillip retire--I know someone said the Queen would never retire, but if Phillip is ill this may be considered. They will gradually take over the subsidiary royal spot the Gloucesters have occupied. I expect Lady Louise to make a significant marriage, possibly to a European royal personage. I'm on a roll. Tell me to stop.