FACTBOX: Top 10 richest in British history

LONDON (Reuters) - A new book, “The Richest of the Rich”, reveals that a French immigrant was the wealthiest man in British history.

Soldier and landowner Alan Rufus, nephew to William the Conqueror, amassed a fortune calculated to be worth 81.3 billion pounds in today’s money.

The top 10, in descending order, are:

Alan Rufus, soldier and landowner, nephew of William the Conqueror, died 1093, 81.3 billion pounds

William of Warenne, Norman knight who fought at Hastings, died 1088, 73.9 billion pounds

Richard Fitzalan, 10th Earl of Arundel, soldier and landowner, 1307-1376, 59.4 billion pounds

Robert of Mortain, half brother of William the Conqueror and soldier, 1031-1090, 59.2 billion pounds

Richard Fitzalan, 11th Earl of Arundel, admiral and landowner, 1346-1397, 55.5 billion pounds

Odo of Bayeux, Sicilian-born bishop and half-brother of William the Conqueror, 1030-1097, 55.5 billion pounds

John of Gaunt, Duke of Westminster, diplomat, 1340-1399, 55.5 billion pounds

Henry, Duke of Lancaster, soldier, 1299-1361, 42.6 billion pounds

Edward, the Black Prince, 1330-1376, 34.9 billion pounds

Richard, Earl of Warwick, soldier, 1382-1439, 33.6 billion pounds

Source: “The Richest of the Rich”