Re: Looking for info on family - Riis from Denmark
A good place to start is the Danish government's database of census and emigration records at ddd.dda.dk (there are both Danish and English search screens available).
Most Riises from Denmark originate in one of two places : the island/county of Bornholm and the county of Ribe (especially the cities of Rive and Veijle). My family is from Bornholm. I have many Riises in my database, but unfortunately not a Rasmus or a Simon.