Steve, I have informtion on the Lusk that married Emma Hamilton if you don't have it.Her husband Frederick S. Lusk was the son of Augustus Lusk and Mary J Shaw. Augustus was the son of John W. Lusk of Victor, Ontario, NY. They moved to Calhoun County Michigan (Marengo & Eckford Townships) and settled there around 1836.
Don't know if this is your Emma or not - I show she was born in 1854.
I have some information on the Lusks from a book that highlights Augustus who was quite instrumental in developing the area.