I the book"Portrait and biographical records of Hancock , Henderson and McDonough counties" published 1894there is a lenghty article about John McAllister i would be willing to photo copy for you if you have not seen it. It says he was born County Antrim Ireland Sept 17 1818, only child of Randall and Nancy McAllister. (Note the spelling difference) in 1846 he sailed for america after a 14 week voyage he landed in New York and at once came to hancock county Illinois. it goes on about his intrests in farming and carpentry and tell of his marriage to Jane Langford.Eight children born to them 4 males 4 females names given. he passed away July 4, 1886 and was interred in the cemetery in Harmony Township.
from the book "pioneers of the Prairie" page 501 Langford George born Ireland died 1925 in 1831, he married Jane Dickinson. she died Feb 1895. Eleven children: a son, George, born May 3, 1856, died Oct 31, 1928 other children named : Jane married J.A.McCallister, Elizabeth Cox, William, Rebecca Harris, John, Gasson, Mary Immegart, Sophia Everhart.
McCallister John-married April 10,1851 Jane Langford born january 24,1833 she died 1925 a daughter of George and janeLangford.
McCallister Jane Ann died Febuary 1925. E-mail me privatly and send me your snail mail address for a photo copy. firstname.lastname@example.org