[mystery island] land lost in the mists of time

Are you a sharp- eyed lassie or chappie who recognizes the shape of this island? Do you know anything of the strange wildlife which breeds here? Can you unravel the fiendishly difficult: ye follies, to discover the three word name of this mythical place? [First letter of the first word is in bold.] And while you’re at it, can you shed some light on the character of Geoffrey de Mandeville? I'll add the name to the post later in the evening.