Which preposition to use with londoner

of Occurrences 4%

Of course one can't tell what the fellow has at the back of his mind, but I was rather surprised that a Londoner of his energy and smartness should spend his time loafing about down here with what seems a poor chance of any result; and I nearly told him so.

at Occurrences 1%

He was an unmistakable Jew, and a Londoner at that.

with Occurrences 1%

Consequently, Gifford concluded, it had been to himself she had turned in this trouble, influenced no doubt by the idea that a Londoner with legal training and experience of the world in its many aspects would be the best man she could enlist to help her.

Which preposition to use with  londoner