Many usefull Information about Georgius Zrunek has collected his american fan Aaron Giles, who also significantly supported the creation of this Album. On his page he writes about his motivation: 

In 2009, I found a copy of Musica Bohemica’s Christmas Mass & Carols in the $1 CD bin and immediately fell in love with its (to me) eclectic mix of the Latin mass and native Slovak.
In attempting to find out more about it, I soon discovered how little information was out there about this work and its true composer, Georgius Zrunek.
This site is an attempt to share everything I have found and shed more light on his music.

Do not overlook: