My father and grandfather were both named Gabriel, but neither was the Gabriel you're looking for. I ran across your Gabriel when researching my own family. Your Gabriel was born about 1870 and was married to Paulina Damjanovic. They had a son Gabriel who was born at Kast and who married (1913) Mary Bulich who was born at Radatovici.
Other children of Gabriel & Paulina (from Michigan census) were Nicholas (1893), John (1894), Mary (1895), Martha (1901), Annie (1903), Paulina (1904) and Marko (1906).
This Gabriel and Mary had sons John (1915) and Nick (1916) both born in Leadville, Colorado.