A very short list

Works of Fiction with Characters Named 'Ewan'
To set our house in order, Margaret Laurence, short story, CAN, 1964 ['Ewen MacLeod]
A remarkably civilised arrangement, Peter Robins, short story, UK, collected 1982 ['Ewan']
Sunset Song, Lewis Grassic Gibbon, novel, SCO, 1932 ['Ewan Tavendale Snr.', 'Ewan Tavendale Jnr.']

That's it.