The following info is what's on file for Mary. I wondered if Lewis Collison, age 12 on the 1860 census, is the son of Isaac and Mary. But that would mean she gave birth at age 13. Possible ... yet hard to believe. Further investigation on Mary and Isaac's wedding date and later censuses is in order.
** Addition - cousin Char sent the 1880 census info. It has been added below. Thanks Char!
Mary Jane Pierce
1834 - 1907
Mary was born in 1834. She is the daughter of Edward Pierce and Jane Forsythe.
About 1847 Mary married Isaac Collison. Isaac was born in 1829.
The Collison family is enumerated on the 1860 census in Chester, Pa.
1860 Census - Chester
Isaac Collison 31
Mary Collison 25
Joseph Collison 26
Lewis Collison 12
Henriettta Collison 56 (Isaac's mother?)
Martha Farrell 75 (grandmother?)
1880 Chester, Del Co p 355A shows
Isaac Collison self M WM50 Painter PA PA PA
Mary Collison wife M WF58 PA PA PA
Jos. Collison other S WM48 House Painter PA PA PA
Pauline McLean other S WF cotton mill PA NY NY
Pension Roll of 1883
Delaware County, PA
Isaac Collison was enumerated on this census which lists US Civil War pensions granted by the government. Certificate # 119,424 . The roll states he lives in Chester. Pension was granted because he was paralyzed on the left side. His monthly allowance was $24 per month which started October 1872.
Mary died March 4, 1907 and is buried at Chester Rural Cemetery, Section N, Lot 116, grave 1.
Also buried in Section N, Lot 116 is Martha Farrell, died 10/16/1877