I think the John Kneale in Michael was buried Apl 17 1858 at Kirk Michael aged 52. The one in Andreas married Esther Mylecharaine in Lezayre May 1 1841.
They were both from Andreas but the John at Kerrow Moar had a sister Mary living with him in 1851 and they seem to be among the children of John Kneale and Esther Kneale.
The wills may help.
Len Faragher