* The fortune of David Thomson and family is estimated at $13 billion US, according to the Forbes list, which ranked them No. 24. The family holds a 70 per cent stake in the media conglomerate Thomson Reuters.

* With a net worth of $5 billion, Galen Weston and family of Galen Weston Ltd. and Loblaw Co. ranked 98th on the Forbes list.

* James, Arthur & John Irving of Irving Oil have a net worth of $3.9 billion, according to Forbes. The brothers were 146th on the list.

* Financier Paul Desmarais of Power Corp. and Power Financial is worth $2.6 billion and ranked 246th.

* Guy Laliberte, with a net worth of $2.5 billion, was the only Canadian on the list whose fortune increased this year. The Quebecer, who founded Cirque du Soleil, ranked 261.

* Bernard (Barry) Sherman, who founded the generic drug company Apotex, has a net worth of $2.5 billion and was also 261 on the list.