POLK COUNTY, WI (WTAQ) - A man killed in a weekend motorcycle crash in northwest Wisconsin was a plumbing and heating contractor and the son of a philanthropist from St. Paul.

Polk County authorities said 68-year-old John “Mickey” Nasseff Jr. of Oakdale Minnesota left a rural road near Amery and flipped over. Nasseff died later at a hospital.

A passenger, his 53-year-old girlfriend Beth Holmgren of Oakdale, was hospitalized in fair condition at last word.

Mickey Nasseff started his plumbing and heating business from his home four decades ago. Nasseff Mechanical Contractors later moved to St. Paul and grew to 60 employees.

His father, John Nasseff, was the vice president and a large stockholder in West Publishing. That business was sold in 1996 for $3.5 billion.

The elder Nasseff has donated millions to the Twin Cities community. Funeral services for Mickey Nasseff will be held on Friday in St. Paul.