Hellsing Ultimate 5 Ending [DEMETER] Creditless

Hellsing Ultimate, still known simply as Hellsing in Japan, is an original video animation (OVA) anime series animated by animation studios Satelight (OVAs I–IV), Madhouse (OVAs V–VII) and Graphinica (OVAs VIII–X), and produced by Geneon.

Hellsing Ultimate is owned by Kouta Hirano and Studio Madhouse, and licensed by Geneon, Madman Entertainment, Manga Entertainment, and Funimation.
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This song plays during the end credits of episode V.
It is called A Patriot with No Name / Song of DEMETER Artist: Mami Hamada
Credit for translation: https://moonlightsummoneranimelyrics.blogspot.com/2017/02/a-patriot-with-no-name-song-of-demeter.html
Rough translation of lyrics:
Latin:
Amor floris, vicinum rumor.
Boris ventus, nobis sonus oblibio.
Immemoratus Dominus,
Dona gradus renutio.
Boris ventus, nobis sonus creditum.

English:

Love of flowers, the sound in the air, the voice of the wind,
we are oblivious to it.(In other words,we don't hear it)
unforgettable Lord, give us the grace to renounce.
The voice of the wind, we believe the sound.