I have an Anders Johansson in my family tree. (Great great Grandfather). His birth date etc don't fit with your dates, but his father, Carl Johan Johansson was born 1803 and died 1856, which is very close to your dates. Carl married Inga Katrina Carlsdotter. One of their children (Ander's sister, Johanna) had a son called Anders and a son called Sven. No mention of the name Rydborg however.