Debra, Have you seen the book "Colonial Families of Cape May County, New Jersey," by Wright, F. Edward ?On p.141, they refer to earlier history of Iszard family entitled Izard Family", The Cape May County Magazine of History and Gen. P. 301, June 1954, by Margaret Irwin McVicker.
Names of Izards there are Michael, Sarah Reeves, James, Simeon, Martha, John, Margret, Nichlos, Henry.A marriage license was issued to Harris, William and Elizabeth Iszard (Cumberland Co. ) dated 27 Oct. 1750.Also, David Corson and Phebe Isard Mar. 1751
Another reference I ran across is entitled Mayflower Descendants in Cape May County.
Ther is an Isaac Izard baptized into some church, (Ifailed to make note) but many others.