Your Team

Team Members

Estate Preservation & Planning  helps individuals, families, and business owners in Massachusetts and New Hampshire avoid unnecessary taxes, legal entanglements, and asset loss while preserving the security and freedom you have worked so hard to achieve.


Donald H. Sienkiewicz, Esq.

Attorney Sienkiewicz is the owner of Estate Preservation and Planning Law Office in Amherst and a partner in the Runyon Law Office in Peterborough. He practiced previously with Rath, Young, & Pignatelli in Concord New Hampshire and Goodwin Procter in Boston. He is admitted to the Bar in Massachusetts and New Hampshire.

Donald earned his Juris Doctor degree in 2002 from Northeastern University School of Law in Boston, Massachusetts. He also has a B.A. in Economics and a B.A. in Environmental Policy from Boston University. Before attending law school, he taught high school in Massachusetts, and spent four years leading wilderness expeditions for troubled teenagers in Utah, Arizona, Oregon, and California.

Donald enjoys skiing, hiking, and fishing, and lives with his wife, Katja and their four children in the beautiful Monadnock region of southern New Hampshire. Read more about Donald’s affiliations, experience and honors here.


 

 

 

 

 

 

 

Benjamin Ming, Esq.

Attorney Ming previously worked at Simonds, Winslow, Willis & Abbott, in Boston, Massachusetts and Gelinas & Ward, in Leominster, Massachusetts. He is admitted to the Bar in Massachusetts and New Hampshire.

Ben earned his Juris Doctor Degree in 2009 from Suffolk University Law School in Boston, Massachusetts. He also holds an A.L.M. in Information Technology from Harvard University in Cambridge, Massachusetts and a B.S. in Computer Science from The George Washington University in Washington, D.C.
 
Ben enjoys running and lives with his wife Sarah and their four children in southern New Hampshire.

 
 
 
 
 
 
 
 
 
 
 
 

Katja Sienkiewicz

Katja joined the firm in 2016 as the Outreach Coordinator.  Her background is in design/build and she has a M.A. in English Literature from Northeastern University in Boston, Massachusetts and a B.A. in English and a B.A. in Art History from Pine Manor College in Brookline, Massachusetts.
 
Katja enjoys carpentry, boat building, graphic design, photography and cheering on her kids on and off the field. She lives with her husband Donald and their four children in the beautiful Monadnock region of southern New Hampshire.

 
 
 
 
 
 
 
 
 
 
 
 

Sheryl E. Allen

Sheryl has 40 years of experience in a wide array of business environments.  She holds a B.A. in International Studies from the Metropolitan State College of Denver. Sheryl enjoys traveling, hiking, and spending time with family. She lives with her husband in upstate New York.