Just thought I would add this for fun too...while researching my own Moody family who I believe came from Scotland and probably from the MOODIE branch in the Orkney's and Thurso, Caithness, Scotland, I found after my Dad's DNA results came back showing that we were of a Norse haplogroup, that the word "modig" is a Scandinavian word for Brave and Courageous and is pronounced MOODY.
Also finding that we were of a Norse ancient ancestry caused me to do a bit of research on the Vikings. Their mythological god Thor had a son named MODI...this name is also pronounced Moody and he was known as a Brave and Courageous Warrior.
Since the MOODIE's of the Orkney's and Caithness also claim to have descended from the Norse Earls who ruled over that area during the Viking era, and since the Moodie's also stated they had been in possession of their lands in the Orkney's for over 500 years (stated so around the year c1823), this solidly places them in this area right at the very end of the Viking times.
The first MUDY to appear on record in this area was a William MUDY who was bishop of Caithness at least as early as c1455. He had a brother named Gilbert Mudy.
MODE is also a possible spelling variant of our name but this name is pronounced just as it looks...like "mode" of operation.
But it is found on the Shetland Isles which is very nearby to the Orkneys. Names and spellings be so different in the ancient times, they could all have at one time been part of the same clan.