Bishop Holiney was born in a family with a five children[1] in the village Dobrotiv of Ivano-Frankivsk Oblast.

Mykhailo Kosylo, clandestine priest and educator, where Petro Holiney completed his seminarian formation.

[3] He was ordained as a deacon on 9 April 1992 by Bishop Sofron Dmyterko for then the Eparchy of Ivano-Frankivsk, incardinated into the newly created Eparchy of Kolomyia – Chernivtsi on 20 April 1993 and lately ordained as a priest on 29 November 1998 by Bishop Pavlo Vasylyk for this circumscription.

From 1997 to 2001 he studied at the Vasyl Stefanyk Precarpathian National University in Ivano-Frankivsk, obtaining a diploma in history.

From 3 December 2020, he served as Chancellor of the Ukrainian Catholic Apostolic Exarchate of Italy and from 1 August 2022, he was the parish priest of the Cathedral Church of Our Lady of Zhirovytsia and Saints Sergius and Bacchus in Rome.