There is no Will on file for John May in the 1850's there is this probate record.
Preble County Probate Court
#2300 - John May - adm. Isaac May of Sangamon Co. IL. Filed II Aug
1857. Surity: Richard S. Cunningham, Elizabeth and Jacob May. Widow
did not wish to serve. Martha Burns late May of Christian Co. IL
sued for her share. List of items set off for widow Elizabeth May
and minor children, Martha and Rebecca included family Bible. B. N.
& J. Fleming, John Miller, John Harshman for coffin for John and
funeral, Isaac Railsback, John Aukerman, Thomas Pottenger, J. P.
Brookins & Son, William Gill, A. V. Auter, John Weal, David
Sufferins, Dr. Pliny Crume, Daniel Lesh, William Caster, Jacob
Kline, George Waggoner for crying sale, William Herdman, Charles W.
Larsh, Barnet 6 Whiteside, Philip J, Saylor, Henry Kesling, William
Tuohy gravestones (John s/o John and Elizabeth May died Feb 27,
1857 aged 18 years 6 months 28 days) and (John May died Aug 3 1857
aged 61 years 2 months 6 days) delivered to Burson burying ground,
William A. Scott, O. & W. Minor, R. S. Cunningham, M. P. Payne,
John Foren, Arthur Borradaile, Dr. John H. Helm, Melyn Miller, Dr.
P. T. Gans, James Werner, Stephens & Co., Cornelius VanAusdal, John
V. Campbell, Joseph Mills, William Caster, Sampson Lockwood, Day b
Bros, A. A. Seibert, Elisha Wilkinson, inventory and list of notes
due estate by appraisers: Benjamin Harris, John Lewellen, Josias
Marshel : Benjamin Harris for clerking sale. List of those who
purchased items at sale.