genealogy guide

I would start here to see what they say
https://www.mydanishroots.info/

Thanks. It looks like they are a great source for people wanting a genealogist to search and we already have quite a bit of information (records, etc.). We just thought a person/guide with their own car and knowledge of the small communities might make our trip to Slaglille more meaningful. I know that a person can hire a private guide in some places so hoped I might find such a person in the Copenhagen area.

You almost have to have a local researcher because of the language issue. You may think you know a lot but I am guessing it is mostly family hand me down stories. You need original documents. I would find a local genealogical society for assistance. They will be able to find the church records, cemeteries, etc.

Fortunately, we did our homework before getting to this point of planning a trip. We have records translated from Danish - those found at the churches in Copenhagen and Slaglille (christening, confirmation) dating to the early 19th century and census records. Birth dates in those early records on on the christening records - no civil birth records a that time. So we have the info, but figured someone with knowledge of the small communities outside of Copenhagen might make it more interesting for us then just renting a car and driving out there.

I do not know if it helps as well in your case but I want to share a good source of historic Danish maps with you:
http://www.kb.dk/en/nb/materialer/e-samlingsbesk/kort.html

I dont have any particular knowledge of the area, other than the general history. The area was the seat of a powerful noble family in the early middle ages, so there are a few interesting early medieval churches in the area, such as the abbey church in Sorø and Ringsted church, where some early medieval kings are buried and the interesting twin towered Fjennested Church. The legend around Fjennested church goes that the local nobleman was building the church when he had to go off to war. He instructed his pregnant wife to have a spire build on the church if she had a girl and a tower if it was a boy. When he came home from war he saw the church had been build with twin towers.
For some more recent history related to peoples lives in the 19th century, you could try the local museum in Sorø https://www.vestmuseum.dk/english/sor%C3%B8-museum-english
If you haven't already you could also try and contact the local priest in Slaglille Church http://www.slaglille-kirke.dk/praeligst-og-kirkekontor.html.
There is also a facebook group for the local churches, perhaps you can write there and ask if they can help you with a local guide. https://www.facebook.com/groups/4sogne/

You could also try to contact the local historical archives http://www.soroehistorie.dk/

Thank you so much for such wonderful leads! I will follow through on all for sure. If you know of a similar Facebook group in Copenhagen, where the other great grandparent lived, please share it as well. We did not want to make this trip until we knew what we know now about my husband's great grandparents and with these leads I think we can make the trip much more meaningful. Thanks again!

You're welcome!
Copenhagen is a bit more tricky, since it's a big city. I don't know if there are local historical or church FB groups in Copenhagen, people tend to have less connection to the local area in the big city compared to small villages.
I'm by no means an expert, but I'd be happy to do a little digging (this is fun), but i will need a bit more to go on. What did your research so far bring you? You mentioned in an earlier post that you had church records, what are the names of those churches. And what are the surnames of the grandparents?