the first Sulak going back in my family's lineage is on my mothers side, a
Rosina Sulak
Birth 17 Apr 1835
Death Apr 1908 in West Point, Fayette, Texas, United States
she is assumed daughter of Jan (possibly John) and Rosina (not sure how common it was to name daughters after mothers)
she was married to a Martin Kopecky in 1854. if there is any connection please let me know