Hi Debbie, I don't know if you ever got a response from Hugh but I'm interested in the Shelton Anthonisz you mentioned in your post. My husband's grandmother was Ann 'Lena' Constance ANTHONISZ the daughter of Edward Vincent ANTHONISZ & Anne Isabel Helen MACK. The information I have on this family is that Edward Vincent ANTHONISZ was her first husband to which she had two other children - Edward Charles Mack ANTHONISZ & Vere ANTHONISZ. When he died, she then married his brother Charles E ANTHONISZ and had two more children - Shelton ANTHONISZ & Ruth Blanch Florence ANTHONISZ.
Is this Shelton ANTHONISZ the same one that you are referring to?
I would love to make contact and get more information on the ANTHONISZ branch of my husband's family tree if there is a connection.