Re: John Valentine Aker/Acker b. 13 Mar 1782 Of Rawdon, Hants, Nova Scotia
I may have the individual, though not confirmed (just an educated guess):
b. 27 Nov 1756 in Lunenburg, NS
Anna C. Himmelman
b. 09 Jan 1761
They were married 22 Jan 1782 - the same year your John Valentine Acker was born.
I do not have him in Valentine and Anna's family - but do have the first child Anna Catherina as being born in 1784 which is close. Perhaps John was the first child born?
I hope this helps.