We are looking for information on my grandfather, Isaac Feinstein, son of Samuel Feinstein. He also went by the name Irving Feinstein and took on the name George Kirby. He remarried an Englishwoman at some point, we are looking for his children with her.
We believe he was born in 1896. His siblings include Robert Finniston in England, Julius Funston in California, Isadore Feinstein in Hartford, Connecticut, Rachel Charney in New York, and Jack Fine in New York.