Most people know about fairy changelings from Ireland. In Scandinavia trolls were accused of switching children, but they had two ways of doing it. In Denmark specifically it was explained as trolls wanting humans who could walk into towns or holy grounds and get stuff for them.
Speaking of Scandinavian troll Changelings, I read a Swedish folklore about a changeling and his adoptive mother. The human mother is advised to brutalize the changeling so that the trolls will return her son, but she refuses, unable to mistreat an innocent child despite knowing its nature. When her husband demands she abandon the changeling, she refuses, and he leaves her – whereupon he meets their son in the forest, wandering free. The son explains that since his mother had never been cruel to the changeling, so the troll mother had never been cruel to him, and when she sacrificed what was dearest to her, her husband, they had realized they had no power over her and released him.
Strange as it may sound, I might be a combination of these two. I live parties and the to be energetic in the right atmosphere and am quite chaotic. But I'm also basically everything you described about the log changeling, except maybe easily confused, and don't always prefer being alone but still pretty often. Then again maybe both types fit most people to some extent.
225 M
I'm a log.