My grandfather's brother immigrated from Greece to Brazil at about 1909. His name is Constantinos Papanikolaou, but he may have changed it to Papas. He was born in 1892 and he died in 1939. I know that he lived at Mato Grosso. There he married a woman named Ramona and had 4 children. Their names and approximate years of birth are Leon (1925), Sofia (1927), Nikos (1929) and Kiriakoula (1932).
I have searched a lot but unfortunately I couldn't find any contact information. I would be grateful if you could help me.