Alice Ball was an unseen character in Only Fools And Horses and was mentioned by her grandson Trigger - aka Colin Ball in "Ashes to Ashes" as having just died. She had an affair with Grandad Trotter while her husband Arthur was away fighting in the war, as mentioned in "Ashes to Ashes" and "The Frog and the Pussycat".
Full Name: Alice Ball (Nee Unknown)
Spouse: Arthur Ball (c1919-1967)
Children: Elsie Ann Ball (c1920)
Grandchildren: Trigger - aka Colin Ball, Trigger's sister (Name not revealed)
Great Grandchildren: Lisa