Reading a book published in 1852 describing days in feudal England I ran across this fact about William l. The Conqueror of England in 1066. When he died in 1087 -- this was his reported annual income:
"Historical sketches of feudalism" 1852
page 183 --
"..... before his death, probably the richest as well as the greatest man in the world. He held in England, as crown lands, one thousand four hundred and twenty-two manors, and many farms, etc. besides; his fixed annual income, exclusive of fines, escheats, relief, etc., was computed at 400,000 silver pounds weight;...."
"FIXED ANNUAL INCOME -- 400,000 lbs silver"
With 13 troy ounces per pound -- and selling at about $15 an ounce -- his annual income would be about $78 million in today's dollars.
First there are 12 Troy Ounces to the Pound, not 13, so your rough-cut figure should be US$72 million or Pounds Sterling 48 million.The Saxon pound, otherwise Tower Pound was also not the same as the Troy Pound.
The currency of England was divided into 240 silver pennies ( we will ignore shillings for the moment as we will the Merchant's pound, the Hansa Pound and the London pound). William maintained the earlier Saxon currency and values which didn't change until the reign of Henry II in 1154, so the base is the Saxon Pound which was "fine silver" of 99.5% (probably, maybe, sometimes) equivalent to a modern 350g as opposed to the Troy pound of 373.241 grams, so again we must devalue William's stash to a modern US$67.3 million. This also means that an English silver penny was worth 1.458 grams of silver which at New York prices today would be worth US$ 0.7149 or GBP 0.46.
But that ignores the fact that in late Saxon/Early Saxon times, silver had a far higher relative value than today. So far better to explore comparative buying power.
I obtained some figures from the Angolurum Rex that predate the Norman Invasion, but are reasonably comparable. NB 1d= 1 silver penny. Modern prices in modern GBP
Item. Cost in 1066 Silver value modern price
today
15 live chickens 1d 0.46 209.85
Live sheep 10d 4.60 180.90
Peregrine Falcon 240d 110.40 1500.00
Wheat per lb 1d 0.46 0.08
hive of bees 24d 11.04 360.00
Soldier's pay* 120d/month 55.20 1727.75
Hide of Land ** 240d 11.40 2,950,000
Touching a woman's
......s 60d 27.6 200.00***
I don't even want to think about the fact that a fine Gascony wine cost 4d/gallon while a crummy Floc de Gascogne costs £15.90/bottle at the supermarket (£96.50/gallon).
It looks like inflation is around 1:1200 excluding land--but as land is actually the medieval measure of wealth one should work on William's "ownership" of half of all land in England was "owned" by William with the rest divided between his 170 "Tenants-in-chief" and the church (actually William still owned in, but the tenants were allowed the income in return for military service) so is we assume that, excluding modern developments such as towns and unproductive areas like mountains and marshes it was mainly farming land
and would amount to, according to Domesday, about 30 million acres--so a modern "going price" for agricultural land in England being £10,000/acre in 2014 suggests that William's ACTUAL wealth was 150 BILLION pounds £150,000,000,000--or US$225 BILLION.
Not shabby for a froggy parvenu gangster.
*Saxon Fyrdman Vs 2016 Private soldier.
** land in Sussex--a hide is 120 Acres
*** Modern fine for indecent assault