And the four drew closely together and lamented aloud at that sight, for they knew that old times and things had passed away in Erinn, and they were lonely in a land of strangers, where no man lived who could recognise them when they came to their human shapes again.

They knew not that Lir and their kin of the People of Dana yet dwelt invisible in the bright world within the Fairy Mounds, for their eyes were holden that they should not see, since other things were destined for them than to join the Danaan folk and be of the company of the immortal Shee.
So they went back again to the Western Sea until the holy Patrick came into Ireland and preached the Faith of the One God and of the Christ.

But a man of Patrick's men, namely the Saint Mochaovog,[12] came to the Island of Inishglory in Erris Bay, and there built himself a little church of stone, and spent his life in preaching to the folk and in prayer.

The first night he came to the island the swans heard the sound of his bell ringing at matins on the following morn, and they leaped in terror, and the three brethren left Fionnuala and fled away.

Fionnuala cried to them, "What ails you, beloved brothers ?" "We know not," said they, "but we have heard a thin and dreadful voice, and we cannot tell what it is." "That is the voice of the bell of Mochaovog," said Fionnuala, "and it is that bell which shall deliver us and drive away our pains, according to the will of God." [12] Pronounced Mo-chweev-ogue.
Then the brethren came back and hearkened to the chanting of the cleric until matins were performed.