One who breakfasts.

1

1834.  North Wales Chron., 22 July, 4/3. The breakfasters upon cold beef and ‘cool tankards’ were an active horse-riding generation.

2

1845.  Syd. Smith, Irish Rom. Cath. Ch., Wks. 1859, II. 334/1. ‘Oh, don’t you know what has happened?’ said the sacred breakfaster.

3

1864.  Realm, 13 April, 6. There are plenty of bad breakfasters.

4