Old Jones' Nickname

A man moves to a village in Wales and gets talking to an old man from the village.

He asks the old man what his name is, but the old man gets very irate at this point and says:

"See that line of houses over there? I built them all, but do they call me Jones the house builder? Do they hell!"

"See those railway lines over there? I laid them all, but do they call me Jones the engineer? Do they hell!"

"See those bridges over that river? I built them all, but do they call me Jones the bridge builder? Do they hell!"

"But, a long long time ago, I fucked ONE sheep... "