'Isaack' Bendall
Just to check, can you see anywhere else on the page where the scribe has used a long 's' that looks like this one?
Ah. Found one - in Joseph's name - you can see it's the same long hooked letter.
What did Ancestry transcribe it as?
At this point in time, a capital "I" and a capital "J" were the same letter.
You can see the first letter of Joseph's name is the same, and in the surname in the entry above of 'Ifield'.