James M. Dillon has no compunction about calling himself a former "whiz kid" of banking. When he was just 34, he fondly recalls, he was running the trust department of Marine Midland Bank in his hometown of Buffalo.

Today Mr. Dillon, 58, is something of an elder statesman. He has seven children, three grandchildren, and a sterling reputation developed over many years in the realm of banking for the wealthy.

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