Sometime in the next 2 or 3 weeks, I'm going to do the Ancestry free trial, so, if you give me all the details you've got (approx age etc), I'll have a look (will be looking for my friend's ancestor). From what I can gather, there's not much on the German Ancestry site...for example, they don't offer a year's subscription because there's not enough to keep you occupied for that long (!) & there's not much German stuff online in general. The way to do it (this is what I've gathered from people like Berlin Bob) is to apply to the relevant German archive.....helps if you can find them on a shipping list to Britain first, though, as you may get an idea of where they come from,,,or you could end up paying archives to do searches when they didn't come from that area at all. What makes you think he was from Hannover ?
My friend thinks her ancestor came over to Britain as part of the household of Caroline of Brunswick, so she was told that the relevant archive in Germany was the one holding the records of that royal family....however, nothing has turned up there (I think they charged her 17/19 Euros to do the search), so they've advised her to try the normal Hannover archive. They like you to send an email, but I've phoned for her first to find out the best address to send it too etc etc.....I'm quite happy to phone for people....I live in Germany & have a telephone flat rate ....or I can translate either the emails you get or write the ones you send, if you like. The archives usually have people who speak English, but, if it's in German, they can't say there have been any misunderstandings. We have certain reservations about the way she's been treated by Caroline's family archive.....we may be wrong, but it seemed a bit slapdash....I chased them on the phone & we got the impression it had been lying in a corner & she thinks they may have been looking at the wrong household. An email has been sent, putting her points to them, but the chap who dealt with it is on holiday...so we'll see what happens.
This is the only foray into German archives that I've been involved with...so I don't know what the general standard is like (you could ask on the relevant board) ....I've only had direct dealings with one archive in Britain & experienced people have said to me that they get the impression they've been messing me around....I guess there are good & bad archives....I've got to try Somerset archives next & I've been told by 2 people that they're very good (if there are going to be any archives left after the Budget)
Anyway, if you'd like me to make any enquiries in Germany for you, just ask here or via a private message