THE "CHAILLOU, YOUNG, KNIGHT, FAMILY TREE

CHAIlLOU....I am searching for information on STANISLAUS AND BARBARA EMERSON CHAILLOU (sometimes written CHAILLON), from Paris, France, around 1820-30, and settling in Baltimore, MD.
YOUNG....JOHN AND MARY PYLE YOUNG were possibly from PA, born around 1810, and moved to Baltimore. The name BUCKLER may be part of their family's names. JOHN died 1-21-1878, and MARY died 1-2-1885.

KNIGHT....JACOB KNIGHT, born in Baltimore, may have had a 1st wife named SARAH L. WALTON, and a 2nd wife named ELLEN (?). I am searching for information on them and their parents. JACOB may have been born around 1800-1810.