Jan-Michael Vincent's first marriage took place before the full weight of celebrity caught up with him. In 1968, he married Bonnie Poorman (born Bonnie Linda Poorman), whom he had met while attending Ventura College in Southern California. At that stage, Vincent was transitioning from small television bit parts on shows like Lassie and Bonanza into serious feature film considerations, having caught the eye of talent scouts due to his natural athletic build and striking blue eyes.
In 1972, the couple welcomed their only child, daughter Amber Vincent. For several years, the young family seemed anchored by the rugged coastal lifestyle of Malibu. Vincent loved surfing and physical outdoor roles, earning critical acclaim alongside Charles Bronson in The Mechanic (1972) and opposite Buster Coward in The World's Greatest Athlete (1973). Beneath the surface, however, Vincent's heavy drinking began eroding the household stability. By the mid-1970s, his lifestyle had created insurmountable strains at home. The couple separated and finalized their divorce in January 1977.
Following the split, Bonnie Poorman largely avoided public life, dedicating herself to raising Amber away from the glare of tabloid reporting. Amber Vincent would grow up largely estranged from her famous father, an estrangement that deepened across the 1990s as Vincent’s legal entanglements escalated.