There is no such thing as the 'oldest creator' as old as time -
etc. Everything is interdependant originated, conditioned
arisings... there is no Creator. There is no beginning.
To those who talked about the
first cause of this world, the Buddha responded by saying that it
is impossible to find a first cause since everything is changing,
interdependent and conditioned by other things. Something that acts
as the cause in the present may become the effect in the future.
Later that same effect may again become the cause. Such
phenomenon continues ad infinitum. It is called the
universal law of Anicca or impermanency.
But if you are talking about the 'Primordial Buddha', the luminous
source of all - source of samsara and nirvana, that one transcends
time and space. It is only by the arising of ignorance that
eventually led to the rebirth in 6 realms.. and our goal is to
realise this Buddha Nature again.
Again,
"Mere suffering is, not any
sufferer is found
The deeds exist, but no performer of the deeds:
Nibbana is, but not the man that enters it,
The path is, but no wanderer is to be seen.
No doer of the deeds is found,
No one who ever reaps their fruits,
Empty phenomena roll on,
This view alone is right and true.
No god, no Brahma, may be called,
The maker of this wheel of life,
Empty phenomena roll on,
Dependent on conditions all."
- Visuddhimagga XVI 90