According to the 1870 Census Sarah was born in KY.
1870ILLINOISCLAYPIXLEY TWP Series: M593Roll: 196Page: 140 Martin, Andrew 24 Farmer Born: KY Martin, Rachel 22 Keeping House Born: KY Martin, Sarah 5 Born: KY Martin, Cyntha 3 Born: IL Martin, Juaily(looks like) 1 Born: IL living next door: Martin, John 30 Farmer Born: KY Martin, Sarah 25 Keeping HouseBorn: KY Martin, Lucinda 6 Born: IL Martin, Manie J. or Marie J. 3 Born: IL
1880ILLINOISCLAYPIXLEY TWP Series: T9Roll: 182Page: 311 Martin, John 40 Farmer KY TN TN Martin, Rachel 25wife Keeping House IL KY KY (What happened to wife Sarah?) (Could this be Andrew's wife?) Martin, Lucinda 15 daughter IL KY KY Martin, Mariah 12 daughter IL KY KY Martin, Lydia 5 daughter IL KY IL Martin, Benjamin 11 nephew IL KY IL Martin, William 8 nephew IL KY IL
Next door: Martin, Mary 32 Keeps house IN KY KY Martin, Martha 11 IL IN IL Martin, Iris 7 IL IN IL