We have several conflicting birth dates for Nancy, from 1847 through 1852. Death certificate states birth date of 1849 and obit 1851.

Daughter of John Harvey Deal/Deel and Lucretia Grass of Perry County, Indiana

Married John Elias / Elijah Bradley in 1875 in Crawford County, Indiana, Book D Page 165: Deel, Nancy A. to Bradley, John W.

Children documented in 1900 are 11 born and 9 living, which included:
John W.
Simon
Rebecca A. "Becky"
George W.
Charles M. "Charley"
Isabelle "Belle"
Samuel James
Lillie M.

1910 census claims 11 children born and 8 were living.

Married My GG-grandfather, George Sigler on 9 February 1927 in Dubois County, Indiana. By 1930 Nancy is living with her son James in Dubois County, widowed and George isn't living with her. This is George Washington Sigler, formerly married to Nancy Keysacker. He was out of state in various military institutions for medical reasons, and an overall general poor provider.

Name George Sigler
Sex Male
Residence Place Birdseye
Birth Date 29 Dec 1847
Birthplace Perry Co Ind.
Race White
Number of Previous Marriages 2
Father's Name Iszask Sigler
Father's Sex Male
Mother's Name Martha Welton
Mother's Sex Female
Spouse's Name Nancy R Bradley
Spouse's Sex Female
Spouse's Residence Place Birdseye
Spouse's Birth Date 24 Jul 1852
Spouse's Birthplace Perry Co
Spouse's Race White
Spouse's Previous Marriage Number 2
Spouse's Father's Name John Deal
Spouse's Father's Sex Male
Spouse's Mother's Name Lucrisa Grass
Certifier's Name Oscar Schwenk
Officiator's Name Chas A Troxler
Additional Person's Name F J Sing
Marriage Date 9 Feb 1927
Marriage Place Dubois, Indiana, United States
Marriage Place (Original) Dubois
First Page Number Yes
Line Number 553

The name of Sigler-Bradley is on her death certificate.

Cause of death: burns from a home fire