I have no understanding of how the name Cholmondeley is pronounced Chumly. I have no idea why Mahoneys Road is pronounced Marnies Road. Nor do I understand why Beauchamp is pronounced Beecham. This English language is surely a hard thing to conquer. My first experience of words not being said like they are written comes from Mother, who for as long back as I can remember, the age of four, has daily applied Oil of Ulan to her face.
I remember being mystified as a child as the word on the bottle in brackets was the word Olay. So which is it? Do you say Oil of Olay and not Ulan? How is it pronounced?