Cloud of Witnesses
Venerable (Monastic) 9th century

Venerable Euthymius the New of Thessalonica

Also known as Euthymius of Mount Athos · Niketas

A Galatian who left family life for monastic asceticism and became a major Athonite and Thessalonian monastic figure.

Feast Day
October 15
Hymn / Apolytikion Icon gallery Video / Media
Their life

A Galatian who left family life for monastic asceticism and became a major Athonite and Thessalonian monastic figure.

His companions & kin
Righteous
Righteous Emilia Mother of St. Basil the Great
Venerable (Monastic)
Venerable Matrona Abbess of Constantinople
Hierarch
Basil the Great
Venerable-Martyr
Monk-Martyr Telemachus
Venerable (Monastic)
Venerable Peter of Atroe
Confessor
Confessors Zosimus the Hermit and Athanasius
Notes

Distinct from St Euthymius the Athonite ('the New') of Iveron (OS-1165) — verified; the two are different saints.

Sources: OCA Synaxarion (oca.org), Lives of the Saints