I´m sure that in earlier forms of English, before 12th century, Meself was used before, but later became interpreted as Myself throughout the centuries. Throughout the British commonwealth, Ireland, Jamaica, etc, ME is used also as My I found me things---I found my things

Language evolves unpredictably. Trying to apply logic is frustrating.

since "meself" si somehow heavy in pronounciation,that's what i can say!