Ronæss is a variation of Rones, which is the name of three farms (North, Middle, South) in Beitstad, northeast of Steinkjer in Nord-Trøndelag, Norway. There are also two other places in Norway named Rones. Several variations of this surname exist.
103 Norwegians have Rones as surname in 2014, 99 people are named Roness, 66 people are named Ronæs - it is difficult to say which farm/family is the largest contributor.
Ronæss was takes as the written form of the family name by Anton Daniel Ronæss about 1870, and all other people named Ronæss are descendants of his son Elias born 1882 - of which 41 with surname Ronæss exist as of 2014.