OAKLAND, Calif. (AP) _ Mayor Jerry Brown, who was twice elected California governor and ran for president three times, ended one of the longest bachelor streaks in American politics Saturday, marrying longtime girlfriend Anne Gust.

It was the first marriage for Gust, 47, a former Gap executive, as well as for Brown, 67, who plans to run for state attorney general next year.

``How fortunate you are to have found each other,'' said Sen. Dianne Feinstein, who officiated at the ceremony. ``What a treasure it is to have a companion for life.''

The couple, who have known each other for 15 years, were married in Oakland's artfully restored Rotunda Building, a suitable site with its wedding cake-like interior of galleries stacked on gleaming white columns.

Guests included former Gov. Gray Davis and Willie Brown, a former speaker of the state Assembly and former San Francisco mayor who is not related to the groom. Former state Treasurer Kathleen Brown, Jerry Brown's sister, was also present.

The couple were serenaded by Gregorian and Cistercian chants, a nod to Jerry Brown's days as a Jesuit scholar. Brown, who said the elements of the ceremony dated back at least 500 years, said, ``To have real change, you have to be grounded in tradition.''

Brown, whose romantic life last made headlines in the 1970s when he dated singer Linda Ronstadt, proposed to Gust on her birthday in March after cooking her dinner in the loft they share in downtown Oakland.

A Catholic ceremony was planned later Saturday in St. Agnes' Church in San Francisco, the same church where Brown's parents, former Gov. Pat Brown and his wife, Bernice, were married.