My great grandfather was Niels Christian Madsen (born March 16, 1855, died April 16, 1928). He married Nicoline Laurette Geronzin (born August 11, 1851, died 1948). They had two sons (do not know their names) and one daughter (Anne Marie Madsen, botn in Hartford CN, October 7, 1886)
If you have information, would appreciate knowing. Thanks.