The subject of the precise status of the deaconess is confessedly obscure and confused, but two or three points at any rate seem worth insisting on. In the first place there were no doubt influences at work at one time or another which tended to exaggerate the position of these women-helpers. This tendency has found expression in certain documents which have come down to us and of which it is difficult to gauge the value. Still there is no more reason to attach importance to these pretensions than there is to regard seriously the spasmodic attempts of certain
deacons to exceed their powers and to claim, for example, authority to consecrate.
Both in the one and the other case the voice of the Church made itself heard in conciliar decrees and the abuse in the end was repressed without difficulty. Such restrictive measures seem to be found in the rather obscure 11th canon of Laodicea, and in the more explicit 19th canon of the Council of Nicaea, which last distinctly lays down that deaconesses are to be accounted as lay persons and that they receive no ordination properly so called
The Catholic Encyclopedia, Volume IV, “Deaconesses” 1908,
newadvent.org/cathen/04651a.htm]