New story to be based on actual Entity

In 1962 a man by the name of Joseph Morse bludgeoned his mother and invalid sister to death in a rural home in Chula Vista. In 1964, Raymond Goedecke jr killed both of his parents and siblings in a similar fashion in the same city. While these tragic slayings were

seemingly unrelated, a tiny bit of research would show that they happened on the same area where the house that I grew up in was built.
It's ironic that I usually take the instances 'Based on a true story' or 'Inspired by true events' with a grain of salt thanks to movies like 'The Amityville Horror' and others, I can honestly say(after years of downplaying it)that I grew up in a house that was possessed by an entity.
With that said, and all of the pain and tragedy that came with that kind of scenario, I'm finally ready to write a story based upon my experiences there. Of course there are going to be changes to names and circumstances but the overall concept will stay the same.
I'm calling this new tale 'Deimos Phobos' in homage to the Greek twin gods born of the war god Ares and Aphrodite and that those two represent everything I felt in my, and my families', thirty year time frame in that house.
'Fear' and 'Dread'.