Lee Martyn, 43, and his daughter Sophie, three, were buried in a single white coffin at their funeral on Monday.
Beautiful flowers were arranged on the top of the coffin in decoration.
Up to 300 family and friends gathered to say their goodbyes to the father and daughter at the Minster Church of St Andrew, in Royal Parade, in Plymouth.
In the murder spree, the shooter kill five people - including his mother Maxine, 51 - in cold blood before turning the gun on himself.
Last month, Mr Martyn’s cousin Jess Morcom said her heart “hurts so much” as she paid tribute to the father and daughter.
She said: “I physically cannot believe I am writing these words and have re written this so many times struggling to find the right ones. This is only something you hear about happening miles away from home, and you never ever think it will be your family.
“When someone passes it’s often the norm to say how they were the world’s nicest person etc etc, but I really do mean it from the bottom of my heart when I say that that was Lee.
“He had the kindest heart, would do anything for anybody and you only had to take one look at him to see how much he loved and adored his family, Bex and his children. I was always so proud to be able to say you were my cousin. The world is going to be a much darker place without you in it.
“Beautiful little Soph my darling, how truly blessed we all were to have seen you grow into such a beautiful funny and clever girl for the three years that we had with you. My heart hurts so much thinking about how it should have been so many more. I will miss your cheekiness and your dancing the most.”
Three separate inquests are being held on the shooting by a Plymouth coroner, the Independent Office for Police Conduct and the National Police Chiefs Council.