The use of grimmR and the later form grim in the sense "lord" has only a few occurrences from Sweden. In extant Icelandic material grimmr only appears as an adjective with the meaning "heartless", "strict" and "wicked", which can be compared with the use of adjective gramr ("wrath") as a name for "lord", see Runic Dictionary Entry for grimmR보관됨 2022-02-24 - 웨이백 머신 at the runic dictionary of the university of Nottingham.
The use of grimmR and the later form grim in the sense "lord" has only a few occurrences from Sweden. In extant Icelandic material grimmr only appears as an adjective with the meaning "heartless", "strict" and "wicked", which can be compared with the use of adjective gramr ("wrath") as a name for "lord", see Runic Dictionary Entry for grimmR보관됨 2022-02-24 - 웨이백 머신 at the runic dictionary of the university of Nottingham.