Well, the last Warwick baptism at Blackmore may be Emma, 3 October 1824. Father James a Sawyer.
Couple of possible burials at High Ongar
Margaret Warwick, 21 July 1825, age 39, abode is High Ongar

James Warwick, 1 October 1826, age 14, abode Blackmore
And a James Warrick, Sawyer, is in Ingatestone in 1841 and 1851. Married to Sarah. In 1851 he is 73, born Baddow.
https://familysearch.org/ark:/61903/1:1:SGVX-QSMBut is this the same James?