Rasmus Oleson, Moen, Lokken Family

I am just now getting back to my Norwegian line after several years and in 2002 I received the following information from Betty Rockswold, who is now deceased. My question is if Ole Rasmussen, Lokken born in 1746 and died in 1786, and his brother, Peder Rasmussen, Lokken, Sormoen born in the same year and died in 1873 is if the birth year is accurate. Also, are there any records on who Rasmus Oleson, Moen, Lokken parents were. I have Rasmus born in Vingelin, Hedmark County, Norway.