An erroneous spelling of CONTROLLER, introduced c. 1500, and formerly frequent in all senses; still retained in certain official designations, while in others it has been changed to the ordinary spelling. Hence Comptrollership.
Whitakers Almanac, 1890, gives (p. 84) Her Majestys HouseholdComptroller of Household; Clerk Comptroller, Kitchen. Lord Chamberlains DepartmentComptroller of Accounts. Chapel RoyalComptroller of Royal Closet. Household of Prince of WalesComptroller and Treasurer. Household of Duchess of AlbanyComptroller. So in Households of Prince Christian, Duke of Edinburgh, Duke of Connaught. Also, in Government Offices (p. 148): Exchequer and Audit DepartmentComptroller and Auditor-General; Assistant Comptroller and Auditor. Board of TradeComptroller of Corn Returns. Patent OfficeComptroller General. National Debt OfficeComptroller General; Assistant Comptroller.
But on the other hand: (p. 147) Controller of the Navy; Controller of H. M. Stationery Office; and so in the various departments of the Inland Revenue, Post Office, Telegraphs, etc.
1525. Ld. Berners, Froissart, xxvi. p. xxx. One that he trusted best shulde be his comptroller and to hym all other shulde accompt.