Lisa, I believe your info is good.I have continued the search and found some revealing info about Chester Carter Lamborn.(1)Chester appears in the 1880 census listed as 6 years old along with a William Lamborn age of 37 living in West Fallowfield, Chester county, Pa.(2)He also appears in the WWI military draft from Montgomery county Pa. and born Jul 3 1874.(3)He appears in the 1910 census from Cheltonham, Montgomery Pa. as 36 yrs. old along with a Alice age 34, Frances E age 14 and Mabel A age 10.(4)He appears in the 1920 census from Cheltonham, Montgomery, Pa. as age of 45 along with Alice age 44 and Mabel A age 23.This is not absolute evidence, but it is certainly revealing evidence. Why Samuel Lamborn did not include Chester is a mystery we will never uncover.The fact Mary Carter does not appear in the 1880 census makes sense, since she died Aug 12 1876.