Sedgebrook Pasks - John & Ann Pask

I am continuing with the research on the Sedgebrook Pasks.

In the 1851 (HO107 Piece 2138 Folios 158 Page 8) & 1861 (RG9 Piece 2481 Folio 118 Page 1) census, William & Ann Pask née Whitehead, had two grandchildren living with them.

1. John Pask (b1842) born in Sedgebrook - In the 1861 census, John was listed as a School master.
2. Ann Pask (b1847) born in Sedgebrook.

I cannot find either of them listed in the GRO indexes. Additionally I cannot locate them in subsequent censuses.