Son of Catherine Drury King 1567-1617 Ireland

I'm having a time with the children of Catherine Drury King 1567-1617 Abbeboyle, Roscommon, Ireland m. Sir John King.She is the daughter of Robert Drury and Elizabeth Carew.Catherine had children, and one or more may be a John King.I'm looking for really specific, accurate information.The Peerage of European Royalty has Catherine as having only 2 children, Margaret & Edward, I think it was (sorry- I closed the pages already).Other places have her as having 5 children, Mary, Dorothy, John, Edward, & Sir Robert.

Looking on the internet there are John King son of Sir John and Catherine all over the place, many born in the US and/or after Catherine died - I suppose her date of death could be wrong but haven't seen it differing.

John King - John King of Weymouth, John "Goodman" King, Capt. John King etc. may be important to all of us.We need accurate information on him.I haven't really been involved in King ancestry much so I am new in this line.Thanks for any help you can give me.