I don't have anything specific on your family, but the name you are seeing: Harilla (Avarilla) is probably ORILLA, sometimes spelled Aurilla, which seems to be a Wood family name. Go back to Genesee County, New York and look for David WOOD and his wife Orilla PARKES. David goes back to Vermont. Your family may be connected to them. Many of the girls born after this couple married were named Orilla. Just a clue, but maybe it'll help. David dies there in 1860 and she goes to Michigan.
Clare, working on MARTIN WOOD family