Police in Austin said the shooting occurred late Saturday at the home of David Wolters, 61, the Austin American-Statesman reported. Wolters was charged with aggravated assault.
James Mason, a police detective, said Wolters' older son, Christopher, 31, got into a violent argument with his mother and younger brother after he made a mess cutting up fruit. Christopher "lunged" toward a kitchen knife, Mason said, adding "That's when dad decided to protect his other son ... ."
Christopher Wolters was hospitalized in critical condition. The arrest affidavit said he had been drinking Saturday evening.
David Wolters has been involved in development in Austin for 30 years.
"He listens, and he's calm, and he seems committed to doing great projects," said Scott Polikov of Gateway Planning, who has been working with Wolters on a development project.