Hi raul
My family also came from Kiev region. My great grandfather was Samuel Sigall born in kremenchug around 1875. . He went to New Zealand via scotland and died in Australia.
He had a sister who married Harry lessnoff. She stayed in scotland.
He had a brother Michal. He also lived in scotland for a while. He emigrated from scotland after 1906 when his son Lewis (Louis) was born. There were another two siblings - girls. His wife was called Dora or Dore.
I have thought that he went to South America.
Could Michal be your ancestor ?
Their parents were called leiber (Leon) and Rachel.