The purple house? Lutra Lucia...

Lutar Lucia, the only house with a two word name the is in Latin (I made this up two years ago-and I am writing this at quarter past five in the morning- but I'm positive this is what it means) and means Otter light, naturally there animal is a shark- But seriously their animal is an otter. The founder Lucia was saved by Salazar Slytherin as a child, she was best friends with Rowena Ravenclaw, Helga Hufflepuff was practically her other half (they were just that close), she saw Slytherin as her brother and was engaged to Gryffindor before she died young at the hands of the Muggles and some of the Muggle borns and half bloods her brother grew to dispise, she was given up by a group made up of some of the muggle borns and half bloods her beloved Gryffindor tried to protect, she died at 17...
she was drown in the the black lake after having her magic sealed.
Nicole Dina Lucia Midford, a late beginner at Hogwarts school of witchcraft and wizardry having not even turned 13 yet found her self under water after falling (she had fallen asleep) out of the boat Hagrid had her on.
And this is where the storie begins.