Leonard Eppel, Albert Dock renaissance mastermind

After a recent trip to Liverpool, I learned that there is an 'Eppel plaque' at Albert Dock (see photo below), and sure enough, an Internet search reveals articles under the heading "Tributes to Leonard Eppel, who masterminded Albert Dock renaissance" and "Eppel is honorary Scouser".

Not least in view of the fact that the eminent namesake has a degree of likeness to my father, I would really like to find out whether there is some distant family connection. Any clues, anyone?

Incidentally, Lord Heseltine has been described as the architect of Liverpool’s renaissance.