Joel, Betsey and many of their children were living in Detroit in 1850 and 1860. Joel Bostwick was a widower and living with his daughter Almira in 1870. Betsey Bostwick died October 24, 1869.
Caroline Bostwick, born September 21, 1826, was married to Parsons Richardson on March 31, 1844 in Oakland Co., Michigan. Caroline's parents were Joel & Betsey (McCalvey) Bostwick.
My Dad's cousin, M. George Allen, was a Bostwick descendant (#3918 in the Genealogy of the Bostwick family... book). Caroline was #3599.
The Richardson family lived in Jackson Co., Michigan, in 1850. The were in Yolo Co., California in 1880.
Name: Parson Richardson
Residence: Woodland Township (excl. Woodland city), Yolo, California
Spouse Name: Carolina A Richardson
Collection: United States Census, 1900
Parsons Richardson died in Sacramento, California, on January 26, 1901:
Name: Parsons Richardson
Event Date: 26 Jan 1901
Event Place: Sacramento, Sacramento, California
Funeral Home Place: Sacramento, Sacramento, California
Collection: California, San Francisco Area Funeral Home Records, 1835-1931
Caroline (Bostwick) Richardson died in November, 1906; her obituary can be found here.