Gov. Patrick To Take on New Chief of Staff in January

Brendan Ryan will replace William 'Mo' Cowan of Stoughton.

  Gov. Deval Patrick announced Tuesday that he will have a new chief of staff beginning in January.  Brendan Ryan, who is now the administration's director of communications, will take over from Stoughton resident William “Mo” Cowan, who has held the job since January 2011. Ryan, 31, is the longest serving member of the governor’s senior staff, according to a press release from Patrick's office. He is a graduate of St. Sebastian's School in Needham and Vanderbilt University and worked as Patrick's deputy chief of staff in 2007 and 2008 before leaving to work as Massachusetts political director for President Barack Obama's first campaign. He returned as a special adviser in 2009, and since has worked with the MBTA and then on Patrick's re-…

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