Am not sure whether I am helping or hindering but have just been wandering around early Ballaugh parish records on your CD. In 1705 Wm.Walker was newly arrived as Rector? " Iony daughter of John Cain / Bishop's Demesne baptized April 23rd." [ I know Mrs Rosa is
seeking early usage of her Christian name.]

Katherine daughter of Adam Cain baptized Nov 5th 1706