Father: Archpriest Konstantin Ostrovsky, rector of the Assumption Church in Krasnogorsk, Moscow Oblast; mother: Rimma (baptized Alexandra) Georgievna Ostrovskaya.

[1] On October 9, 1998, he was ordained a reader by Archbishop Eugene (Reshetnikov) of Vereya, rector of the Moscow Theological Academy and Seminary.

On January 6, 2001, he was tonsured a monk by Metropolitan Juvenal (Poyarkov) of Krutitsy and Kolomna with the name Constantine in honor of the New Martyr Konstantin of Bogorodsk [ru].

[6] On July 26, 2012, by the decision of the Holy Synod of the ROC, he was elected titular Bishop of Zaraisk, vicar of the Moscow Oblast Diocese and appointed rector of the Kolomna Theological Seminary.

[7] On July 29, 2012, in the Cathedral of Our Lady of Smolensk of the Novodevichy Convent Мetropolitan Juvenal of Krutitsy and Kolomna elevated him to the rank of archimandrite.

[8] On July 31, 2012, in the Our Lady of Vladimir chapel at the Patriarchal Residence in Chisty Lane, he was nominated Bishop of Zaraisk, vicar of the Moscow Oblast Diocese.

[13] On June 2, 2014, at the Moscow Theological Academy he defended his thesis "The history and teaching of the "Church of the Last Testament" (Vissarion sect)."

On April, 10, 2019, he was appointed head of Basic training courses in the field of theology for monks of the Moscow Oblast Diocese.

[21] On August 25, 2022, by the decision of the Holy Synod of the Russian Orthodox Church, he was transferred vicar of the Patriarch of Moscow and All Russia, with instructions to head the newly created Missionary department of the Moscow City Diocese, with the dismissal of the rector of the Kolomna Theological Seminary and expressing gratitude for the hard work.

[24] On October 11, 2023, by the decision of the Holy Synod of the Russian Orthodox Church, he was appointed Acting Patriarchal Exarch of Africa.

[30] On August 29, 2024, by decree of Patriarch Kirill, he was relieved of the post of chairman of the Missionary Department of the Moscow (city) diocese with an expression of gratitude for the work he had done.