Following on from the post above..
Senior coroner Peter Bedford reportedly told the inquest Mr Cousins' fiancee, Emma Bowden, died of head injuries and drowning.
Her daughter, Heather, also died from head injuries and drowning.Mr Cousins' eldest son William died from head and facial injuries while his youngest son, Edward, drowned.
So it would appear that all except the son Edward were probably unconscious as soon as they hit the water. Alas poor Edward appears to have remained conscious due to lack of head injuries which would be beyond ghastly.. rip..