St. Hyacinth, Confessor
St. Hyacinth, called the apostle of the North, was born in 1185 at the castle of Kamin, near Breslau.
Having gone to Rome, he was received there into the Order of Friar Preachers, by its founder, St. Dominic, in the church of St. Sabina. At the age of 33, he was made superior of the mission which this saint sent to Poland.
St. Hyacinth then went over to Austria, Poland, Denmark, Scotland and Livonia, everywhere preaching the word of God, which his numerous miracles confirmed.
He died on the feast of the Assumption in 1257.
Os justi meditabitur sapientiam, et lingua ejus loquetur judicium; lex Dei ejus in corde ipsius. * Noli aemulari in malignantibus: neque zelaveris facientes iniquitatem.
The mouth of the just shall meditate wisdom, and his tongue shall speak judgement: the law of his God is in his heart. * Be not emulous of evildoers: nor envy them that work iniquity.
(Psalm 36:30-31,1 from the Introit of Mass)
Deus, qui nos beáti Hyacinthi Confessóris tui ánnua solemnitáte laetíficas: concéde propítius; ut, cujus natalítia cólimus, étiam actiónes imitémur.
O God who dost gladden us by the annual solemnity of blessed Hyacinth, Thy confessor, mercifully grant that we who celebrate his heavenly birthday may also imitate his example.
From the Catholic Encyclopaedia: http://www.newadvent.org/cathen/07591b.htm