Wavering Monarch, a multiple grade I winner whose champion son Maria's Mon sired 2001 Kentucky Derby (gr. I) winner Monarchos, died June 17 because of the infirmities of old age, Glencrest Farm announced.The 25-year-old son of Majestic Light started his career at Spendthrift Farm near Lexington before moving to Glencrest near Midway, Ky. His death came after the June 5 death of farm stallion Clever Trick."It is such a shame that we had to put down Wavering Monarch, because he was a home product through and through, and excelled as both a sire and a broodmare sire," said Glencrest's David Greathouse. "He will be sorely missed."Bred and raced by Glencrest, Wavering Monarch won six of 13 starts and earned $466,773. His four stakes victories included the Haskell Invitational Handicap (gr. I) and San Fernando Stakes (gr. I).Wavering Monarch, who was produced from the Buckpasser mare Uncommitted, became known as a successful sire of 2-year-olds and broodmares. Maria's Mon was champion juvenile male of 1995. Wavering Monarch also sired such other successful 2-year-olds as Canadian champion filly Wavering Girl, plus graded winners Fluttery Danseur and A. V. Eight.Wavering Monarch has sired 38 stakes winners and the earners of $19.2 millions. His daughters have produced 27 stakes winners and the earners of $24.6 million, most notably champion and Preakness Stakes (gr. I) winner Prairie Bayou. Wavering Monarch was buried at Glencrest.