Hi Gale and List
The thread was getting a bit long so a new reply.
Julius' son was baptised in New Orleans with only the birthplace of Julius being noted. Other than the child Wilhelm the names of his father, Julius Wilhelm Burgdorf born in Heildesheim in Hanover, and his mother Maria nee Kirschein born in Berlin are on the certificate. The officiating minister is Hermann Perpeet, and one witness, Mr. Edward Barke. The date in 19 March 1870.
I was aware of the larger town Burgdorf but only recently found out that there is a smaller village by the same name. I have searched neither.
On the Wolfbuttel list I found several Burgdorfs none of which seemed to fit. Other listers have also taken a look. But there were several Burgdorf surnames that had no given names that I did not pursue.
His birth year range was determined by the age on his emigration application and from his death certificate. From the emigration info he would have been born in 1826, from his death certificate he would have been born in 1825.
Max