Dear Don,
There is no speculation about Byron and his relationship with his daughter. Her parents separated when she was little more than one month of age, and thereafter they never met.
I don't think the character or the novel is named after her, but there is one definite reference to her:
"Ada was transformed into a sort of graceful computing machine, endowed, moreover, with phenomenal luck, and would greatly surpass baffled Van in acumen, foresight and exploitation of chance..."
Ada was not allowed to meet her father or to read his writings. She did once travel to a part of Switzerland with which he was associated, Lake Geneva (Leman) but this was after his death.
Carolyn