I bet my Grandfather could pronounce Monongahela. He lived in Allagheny County, 1910-1917 (ish). He came back when he realised he was the only one of his workmates (Allagheny Iron & Steel) who didn't sleep with a gun under his pillow! There are two great uncles buried there aged 6 months and 6 days.

Wednesbury - we Wedgeburyites often referred to it as Wedgebury.
Wednesfield - referred to as Humpshire from the hump-backed lockmakers. It was said (jokingly) that pubs had alcoves so the hump-backed lockmakers could lean back comfortably.
Walsall - war sull
and what about the "areal of Brisel" - the "area of Bristol" to you.
Wiveliscombe Devon, Wivelscum
Stouffville Ontario - Stow-vill
Toronto - Tron'to