Sven Peterson wife Elin Gilman

Looking for ancestors of Sven Peterson and wife Elin Gilman of Karlskrona, Sweden and 6 sons and one daughter, Hannah.  Otto (dob 1/21/1957), August Per, and Alfred were 3 of their sons.  Otto was married and his wife died a year after child birth (gave birth to Reynard) around 1886 or 1887.  Around 1888 or1889 he married Karolina Mathilda Abrahamson and she took over the upbringing of Reynard. Otto and Karolina had 5 children: Anna Karolina Elfrieda dob 9/8/1990 and a son, Per Olaf Hjalmar dob 8/21/1893. Otto immagrated to America May of 1893 three months before his son was born.  Otto sent for Karolina in 1904 and she and Anna and Per Olaf came with her. Reynard was 18 and didn't want to come.  From what I found out Sven Peterson and Elin Gilman were probably born sometime between 1825-1835.  If anyone has information on this please let me know.  Otto is my grandfather and Sven is my great grandfather. My email is flavia719@yahoo.com.