Hi Wozzle
Orrvale, Balerno was a small street in the middle of the old village and my father told me that it was named after his Great Grandmother, Euphemia (Messer) Orr. In 1901 Euphemia was living in Smith's Buildings, Balerno. I assume that she was still there when the council decided to knock down the old houses and put up new housing. My GG Grandmother didn't want to leave her old house and stubbornly refused to move. I think her house was the last one standing in the row but, of course, the authorities won in the end and she had to move out. But the new street was named Orrvale in recognition of her last stand, so to speak. She died in Orrvale in 1924.
Rhoda