Definition of "grandly"

This slight way of treating both his book and his ancestors nettled little Puddock – who never himself took a liberty, and expected similar treatment – but he knew Sturk, the nature of the beast, and he only bowed grandly […]

1863, Sheridan Le Fanu, The House by the Churchyard

But whether or not Sumner was the most typical man of his native commonwealth, he certainly does take a representative place on the bede-roll of her great sons. And on a wider field he does especially and grandly represent the Puritan spirit and the Pilgrim idea, and so the peculiar ethical and political idea of our whole nation.

1892, Anna Laurens Dawes, Charles Sumner‎, Dodd, Mead and Company, page 2

The world had appreciated what he had done, and had put much to his credit, and he was prepared to draw upon this grandly.

1899, Richard Harding Davis, The Princess Aline‎, Harper & Brothers, page 2

Thus happily unfolding his plans, his work enlarged grandly. He was living in high hopes of spending uninterruptedly the greater part of his life in China.

1902, William Elliot Griffis, A Maker of the New Orient: Samuel Robbins Brown, Pioneer educator in China, America, and Japan: The Story of His Life and Work‎, F.H. Revell, page 102