Wiktionary
on account
a. As something to be reckoned up as part of final payments; on credit. conj. (context colloquial English) On account of the fact that; because.
Usage examples of "on account".
Table Bay is reckoned unsafe riding at this time of year, on account of the strong northwest winds.
It's all on account of the water the people drunk before they laid up.
I do not wish to trust details to the post, but, on account of a secret I possess, I go in daily fear of my life.
Little room where they say the yth Baron Sackbut locked up his lady wife on account as she'd got overly familiar with the steward.
In this he is greatly to be admired, but not on account of his drive for truth or for pure knowledge of things.