Little is know about Margaret of La Roche, only daughter of Mary de la Roche and John Fleming, who on the death of her brother John became Baron de la Roche.  She was born before 1360 and married Sir Roger de Clarendon, but sadly died in 1382 before she had even reached her majority.  The family held lands in both Ireland and Wales, with one of the known family homes being Castle Roch, near Haverfordwest, Pembrokeshire.