Not exactly sure about any connection. Eugene Larche was born about 1850 and was married to Julie Morney, according to the 1880 Soundex index. They lived on Canal St. at 13 1/2 Roman St.
Children were: Philemine,Sylvanie,Marie and Antoinette.
According to the 1870 census, Adelaide Larche, aged 90, lived in Plaquemines, New Orleans.