Hannover-Burgdorf

The Wilhelm Burgdorf found by Barbie-Lew could possibly be my Julius Wilhelm but I have doubts. The birth year is different although close, 1823 v 1825. I will try to follow up. By the way, what is Ictus Solis?
Max Charles Eugene Burchtorff is my grandfather, my namesake, the Max part. There was a son with the same name but he did not use Jr. Carl Gustave was the son of Julius and Mary (Maria) Burgdorf, my great hrandfather. As for David Burgdorf I have no data. There was a Robert, son of Max C. E. Burgdorf who died at about age 30. Bernice Doleac Burgdorf was my Dad's second wife who died quite young. Louella Burgdorf was Uncle Charley's first wife. I have no clue as to Donald but will follow up.
Since before Christmas it was my aim to go to New Orleans and do some more research, reexamining some film at the HNOC library and the main public library. BUT unless you are extremely wealthy, forget about it. I've made many contacts and a couple of places had accommodations but the least expensive was $179 per night. The Monteleon Hotel rates range from $275 to $900. I was told that most of the available rooms are contracted by Fema for displaced people or workers brought in for the recovery project.. Day's Inn, a 2 start motel in Picayune Ms 50 miles from NO has posted rates of $179. I need to get down there to help my sister-in-law through some legal matters resulting from Katrina. So I am still looking.
I thank every one for your extensive help.
Max