I'm not sure if this link will work but, I found a book that says the same explanation for Sizemore. It says that the name Sismai means "sower" in Hebrew.
Here's the link: https://books.google.com/books?id=qpvJP7WAv1EC&pg=PA160&lpg=PA160&dq=sizemore+related+to+sismai&source=bl&ots=PSbq8CuXid&sig=ACfU3U3PCEWp0QJBf_d0YS4g_TI1sqhOZg&hl=en&sa=X&ved=2ahUKEwi3g6_MjPTrAhUCU98KHSKGDzMQ6AEwCHoECAgQAQ#v=onepage&q=sizemore%20related%20to%20sismai&f=false
You have to scroll down a bit to Sizemore.
This message was edited by the author on September 18, 2020 at 6:55 PM