Definition of "Louise"

Louise, thy stately name sounds in my ear / Like a sea wave, that gathering, hill on hill, / Upon the blue horizon, smooth and still, / Sweeps to the shore

1890 Arthur Weir, John Arthur Lockhart: The Romance of Sir Richard. Published by William Drysdale&Co. page 83

That's what I baptized her. Mary Louise. Everybody else called her just plain Mary, but that wasn't the way I intended it. I intended it Mary Louise. That's a pretty name, isn't it? Mary Louise. Mary is too...plain?

1957, Ed McBain, The Con Man, Armchair Detective Library, published 1991, page 47

I've always thought I was too large for a soft, musical name like Louise, too untidy.

1991, Emily Ellison, The Picture Makers, G.K.Hall, page 111