Looking for Gumbrells of Sussex

My name is Dave Gumbrell, and I am continuing the research into my family tree that was started by my late sister. I have evidence of the marriage of Daniel Gumbrell to Rebecca Upfold in 1618, and can trace my family back to them. But I have several 'missing' relatives in the 1600s that I would like to link into an expanded family tree. I am also looking for information on Daniel's family, including his possible father Charles Tountos or Gumbrell.