In 1998, Shamrock had a falling out with his brother Ken and his father Bob; they would not communicate again until Bob became terminally ill years later. In separate interviews aired January 18, 2007 by Sherdog.com's "Beatdown" radio show, both Frank and Ken said they remain estranged - Frank claimed Ken has spurned all attempts at reconciliation; Ken accused Frank of treating their father poorly. As seen on Frank's Spike TV documentary, Bound by Blood, he and Ken have reconciled. On January 14, 2010, Bob Shamrock died due to health complications from diabetes.