Is there any nuns that can be married?

Answer 1

Categorically NO. Nun of the above ! pun intended. Celibacy is an integral part of the convent lifestyle, so to speak. In some countries in Europe lay ( not religious order members) Nurses are sometimes called Sister as a sort of courtesy rank- they may well be on-duty in Catholic hospitals, but are not nuns. These Ladies, of course can be married. In Europe, Sister, while it certainly derives from Nursing Sisters ( originally all were nuns) is often applied to lay Nurses as a sort of courtesy rank, as explained before these women are nurses, but not nuns. There are, of course Nuns in the nursing role, indeed the Franciscans and Dominicans active in this role, look at names of Hospitals. At one time approximately half of all Nurses were trained in Catholic- religious oriented- hospitals, this is no longer true.