The 1880 census of Kalamazoo lists a Horace L Mallory and Elizabeth H as father and mother in law to Benjamin Chattiss and wife Mary E.
It took me awhile but...Horace is Horace Durand Mallory from Canandiagua NY (son of Moses Mallory jr and Sally Durand).Theyhad a son Daniel Taylor Mallory who died at age 5, then Mary and in 1847 another son Daniel T.
I can't find Benjamin Chattis...and I notehis name is spelled Chattin on this marriage record:
14 May 1873
MARRIED - At the residence of the bride's parents on Park street, May 7th, by Rev. A. M. Green, Mary E. Mallory of this village and Mr. B. Chattin, of Galesburg, Michigan.
I found Elizabeth buried in the Gilson Cem in Climax, along with sonDaniel:
Kalamazoo County MI Archives Cemeteries.....Gilson Cemetery Climax Kalamazoo MI Elizabeth H Mallory 1819 d 1897 Daniel T Mallory Feb 1847 d 1923 =