There is little evidence that Isabel is Henrie BLICKE's mother.
An Isabel BLICKE, wife of William of Morton Morrell, was buried in 1542. We have no document confirming either of Henrie's parents' names. This lineage is based purely on the absence of any other BLICKEs named in Budbrooke documents, suggesting that Isabel and William were close relatives of Henrie and, using the same argument, of Roger BLICKE.
If correct then Isabel might have been born c1490, and died in her 50s.