I wonder if there is any chance that John's parents could be William and Phebe Cadwalender (and William's father was John Cadwalender)? [I just read your post and see that his father
was supposed to have been "Wm D". I cannot preview my post - hopefully it makes sense and there are no errors.]
The link that Genealiza found (the actual image, not the typed sheet) shows only four marriage bonds for Cadwallender/Cadwalender in Bedford County:
John and Mary in 1791
William and Phebe in 1818
John and Elizabeth in 1845
William and Nancy in 1852
It's purely speculation, but I thought I would mention it...
http://www.vagenweb.org/bedford/bedf-m_c.htmBedford County, Virginia
December 22, 1818, William Cadwallender and Phebe B. Stephens
William McGlothlan, Surety
Your John born c1819 in North Carolina
...6th Sep 1845, Bedford County, VA for John Cadwalander to Elizabeth Martin, dt of Wm D. They wed on 7th Sep 1845."
March 10, 1852 William Cadwalender & Nancy Newman
Samuel H. Wilkes, Surety
1791, John and Mary Collins, dt Sary
Elisha Cundiff, Surety
Virginia Deaths and Burials
William Cadwalender, born c1794, Bedford
Death: 8 October 1872, Bedford County, Virginia
Farmer
Father: John Cadwalender
1860 Southern Revenue District, Bedford, Virginia
Wm Cadwalender, age 62, Farm Laborer
Nancy, age 35
and children
http://www.rootschat.com/links/01htm/