June
Happy to help you get started.
Have you tried searching on the surname https://www.geni.com/surnames/blewden that gives you 20 or so to consider and I have expanded your existing tree to its current immediate limits which might give you more clues but it is your own family research that will usually provide the best advances.
I live in Dorset where the Blewdens in your existing tree came from so I will see if they are a prominent local family.
