Skip to main content

Rackham Karlsson

About me

I am a family law mediator and collaborative attorney with experience in a broad range of family law matters, including contested and uncontested divorces, out-of-wedlock child custody and child support, modification, removal, prenuptial agreements, and property disputes. My clients have included husbands, wives, mothers, fathers, and concerned family members.

Before founding my own firm, I was an associate at Kates & Barlow, PC, a premiere Boston family law boutique representing high-net-worth individuals. Previously, I was an intern at Bowman, Moos & Elder, LLP.

I am a graduate of Harvard Law School. I live in Cambridge, Massachusetts with my wife, two sons, two dogs, and two cats.


Photos and videos

4043767 1390414479

Practice areas


  1. Prenuptials: 34%
  2. Mediation: 33%
  3. Divorce: 33%


Payment types:

Cash, Check, Credit card

Attorney endorsements

15 total 

Are you an attorney? Endorse this lawyer

  • Lisa J Smith

    Rackham is a compassionate and skillful mediator. He is able to help clients feel comfortable to express ideas – and to be able to listen to each other. His thoughtful approach helps clients solve problems. As I have worked with Rackam on a divorce mediation mater, I can enthusiastically endorse Rackham.


    Lisa Smith Child support Attorney
    Relationship: Worked together on matter

  • Maura Melcher

    Attorney Karlsson is bright, insightful and professional. He has a way of seeing to the heart of the matter and proposes thoughtful solutions to complex problems. I can see that he will be a fantastic mediator and he has the perfect temperment for dealing with the volatile and personal matters that arise in family law. He is fair and honest, I highly recommend him.


    Maura Melcher Family Attorney
    Relationship: Opposing Counsel on matter

Contact info

Zephyr Legal Services, LLC

2294 Massachusetts Ave.
Cambridge, MA, 02140


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Top 10 Attorneys Under 40National Academy Of Family Law Attorneys2014
10 Best Under 40American Institute of Family Law Attorneys2014
Original SupporterOutGrade2013
Work experience
TitleCompany nameDuration
Volunteer MediatorCommunity Dispute Settlement Center2014 - Present
Mediator and Collaborative AttorneyZephyr Legal Services, LLC2012 - Present
AssociateKates & Barlow, PC2011 - 2012
Association namePosition nameDuration
Massachusetts Collaborative Law CouncilPublic Education Committee2014 - Present
American Bar Association, Dispute Resolution SectionMember2013 - Present
International Academy of Collaborative ProfessionalsMember2013 - Present
Massachusetts Council on Family MediationMember2013 - Present
Massachusetts Collaborative Law CouncilMember2013 - Present
Association for Conflict ResolutionAssociate Member2013 - Present
American Bar Association, Family Law SectionMember2012 - Present
Boston Bar Association, Family Law SectionMember2012 - Present
Massachusetts Bar Association, Family Law SectionMember2012 - Present
Boston Bar AssociationMember2012 - Present
American Bar AssociationMember2012 - Present
Massachusetts Bar AssociationMember2011 - Present
Phi Beta KappaMember2001 - Present
Divorce CenterMember2014 - 2015
Divorce CenterPublic Education Committee2014 - 2015
Boston Bar Association, Volunteer Lawyers ProjectVolunteer Attorney2012 - 2013
Senior Partners for JusticeVolunteer Attorney2012 - 2013
Legal cases
Case nameOutcome
Child Support and College ExpensesNegotiated settlement
Prenuptial AgreementMediated agreement
Child CustodyNegotiated settlement; sole custody to client
See all legal cases 
School nameMajorDegreeGraduated
Harvard University Law SchoolLawJD - Juris Doctor2011
Grinnell CollegeComputer ScienceBA - Bachelor of Arts2001
Speaking engagements
Conference nameTitleDate
Hampden And Hampshire County Collaborative Law Practice GroupGetting Known for What You Do: Defining and Marketing Your Collaborative Brand2015
Greater Boston Collaborative Law Practice GroupGetting Known for What You Do: Defining and Marketing Your Collaborative Brand2015
Greater Boston Collaborative Law Practice GroupAttributed Income and the Catch-22 of Financial Separation in Divorce2015
South Shore Divorce Recovery GroupPost-Judgment Parenting Issues: Mediation and the Alternatives2014
Greater Boston Collaborative Law Practice GroupRaising Awareness of Alternatives to Divorce Litigation2014

Recent Posts

Spinner 3a6e9f21c8fb91b5d0a734943fe4743ce1842932f437623b0c43270c1fc97a3d