Marko Konstantinov was an Albanian from Pogradec who settled in Sofia, Bulgaria, where, among other things, he contributed to the publication in 1898 of the work in Albanian: Kalendari Kombiar.
According to the information posted by scholar Dimitar Bechev, his son became a priest in Bulgaria and soon became known as one of the country's most prominent clerics, named Kiril.
From the post of Metropolitan of Plovdiv, Cyril of Bulgaria played a major role in stopping the deportation of over 1,500 Jews to concentration camps in 1943.
When the Bulgarian Church regained the status of autocephaly in 1953, Marko Konstantinov's son was proclaimed its first Patriarch, a post he held until his death in 1971.