It looks as if Nelly was a foster child. Abbie claimed only four births and four living children in 1910, and while she did claim five births and five living children in the 1900 census, those numbers were later corrected to 4/4.
Nelly Montanye |
George Montanye, head, born Sept 1849, age 50, married 20 years, born New York, parents born New York; Abbie, wife, born Sept 1863, age 37, married 20 years, 5 births/5 living children [corrected to 4/4, why?], born Wisconsin, parents born New York; Edwin, son, born Jul 1881, age 18, single; Lilian, daughter, born Sept 1887, age 12; Walter, son, born Sept 1883, age 16; Dewey, son, born Aug 1895, age 4; Nelly, daughter, born Aug 1889, age 10.