All and singular is a legal phrase meaning "each and every". It is an antiquated term that was commonly used in making bequests under a will, and other contexts. The following is an example of the use of the phrase in a clause of an 18th century will:
"This Will was proved at London the fifteenth day of May in the year of our Lord one thousand seven hundred and ninety four before the Right Honourable Sir William Wynne Knight, Doctor of Laws, Master Keeper or Commissary of the Prerogative Court of Canterbury lawfully constituted by Oath of Jane Mouat, Widow, the Relict of the said deceased and sole Executrix named in the said Will to whom Administration was granted of all and singular the Goods, Chattels and Credits of the said deceased, having been first sworn by Commission duly to administer."
