hi
i have been researching my family tree for some time now my maiden name was yeldon.
I beleive the yeulling name probably originates from the yealding youlding yuleding however in times gone, by people were not as well educated as todays people and a lot went on pronounciation and then as time went by it became accepted that it was the correct way of spelling your name. if i can be of further help let me know