That's interesting. Where did you find the name Elizabeth Aldis as wife for William Fisher? (Source)
I have William Fisher of Syleham, suffolk, England (d. 1591) and father of Anthony, as married to Margerie BERT, m. 15 October 1551. This information comes from the article "The Bert Ancestors in England of Fisher Families in Early New England" by Myrtle Stevens Hyde and John Plummer in the "New England Historical and Genalogy Register, Vol (sorry don't have that written in my notes, will have to look it up.) It's the April 1997 issue. This is a well researched article from original sources. William's will is listed as well, naming his "welbeloved wiffe Margerie" and son Anthony among others. Since the will is dated 14 June 1591 and probated 9 aug 1591, the only way William could have married Elizabeth Aldis is for him to have married three times; 1. the Margerie he married in 1551, 2. Elizabeth and 3. a second Margerie.
I do note that William Sr. had a son named William Jr. who married an Alice Aldous. Could this be the Fisher / Aldis marriage you mean? William Jr. died in 1619 and left a will dated 9 June 1618, proved 8 apr 1619 naming his wife and children (William, Anne, and Mary) as well as Anthony's children (William Jr's brother) Anthony Jr., Joshua, Amos, John, Mary, Martha and Cornelius.
Anthony's grandson, Joshua (son of Joshua) married Mary Aldis 15 November 1643 in Dedham, Hampshire Co., MA.