According to
Titan, page 661,
"In 1948, after dating actress Mary Martin, Winthrop married a voluptuous blonde named Barbara "Bobo" Sears--nee Jievute Paulekiute, the daughter of Lithuanian immigrants. Junior and Abby boycotted the wedding, and the marriage scarcely lasted the year."
Well, wasn't "Bobo" Winthrop Paul's mother? Or was a there a second marriage? The last marriage (second?)was to a matronly woman who was active in the mental health field. Her name slips my memory at the moment. I am thinking it was "Jeannette."