The Blazers and the Seahawks.
Yes, he is a co-owner.
Portland Trail Blazers NBA Seattle Seahawks NFL
Yes, Allen purchased the Seahawks in 1997.
Yes, he owns one of the world's largest!
No, Evangelist David Paul is not AA Allen's grandson. David Paul is known for his own ministry and has made a name for himself independently. AA Allen, a prominent figure in the healing revival movement, had a significant impact on many but did not have a direct familial connection to David Paul.
The Cowboys owner
I don't know where this preception of Steinbrunner being the richest owner has come from but it's simply incorrect. Before his death, Steinbrunner was worth an approximate $1.3 Billion according to Forbes. Wealthy, but no where near some other owners. Currently the richest single owner in North American professional sports is Paul Allen (Net Worth: $13.5 Billion) who owns the Portland Trailblazers (NBA) and Seattle Seahawks (NFL). The richest prospective owner (meaning someone who has shown interest of acquiring an professional sports property but has not been able to secure a deal for one yet) that I know of is David Tompson (Net Worth: $19 billion) who is working towards getting an NHL team for the Canadian city of Winnipeg, Manitoba. The richest owner outright is the Ontario Teachers Pension Plan who own 66% of Maple Leaf Sports and Entertainment which in turn owns the Toronto Maple Leafs (NHL), Toronto Raptors (NBA), and Toronto FC (MLS) along with the minor league club the Toronto Marlies (AHL). The OTPP' estimated assets exceeds $96.4 Billion.
As of the present time, Derek is not a part owner of any team.
Microsoft was founded in April 1975 by Bill Gates and Paul Allen
Usher is a co-owner of the Cleveland Cavaliers.
Harold Ballard was known to be an owner of two sports teams. He was a part owner and eventually a majority owner of the Toronto Maple Leafs team for the NHL. He was also owner of the Hamilton Tiger Cats NFL team for 11 seasons.
The actor Will Smith is not an owner or minority owner of an NFL Franchise. While he is not an NFL owner, Will Smith is a minority owner of the NBA's Philadelphia 76ers.