• Kyle Zwieg

    Kyle Zwieg, a sixth generation dairy farmer, is a 2006 graduate of Oconomowoc High School.  He is also a 2008 graduate of the UW Madison Farm and Industry Short Course Program –  Specialization in Soil Science and Agronomy.

    Kyle is a former employee of Koepke Farms and is part owner of Zwieg’s Maple Acres LLC Dairy Farm.  Maple Acres is one of 15 farms in Wisconsin whose purchase of development rights was funded by the PACE program (Purchase of Agricultural Conservation Easement).  Tall Pines Conservancy co-holds the easement with the State of Wisconsin.  The Homestead Farm was established in 1856.

    Kyle is a member of the Waukesha Chapter of the Farm Bureau and Farmers For Lake Country.


  • Bruce Rosenheimer

    Bruce Rosenheimer is a former member of the Advisory Board to Tall Pines Conservancy.  A competitive sailor and cross country skier, he also serves on the Board of Heilier Huegel Ski Club.  He and his wife Kathy live on Okauchee Lake.  Bruce is a wealth management strategist with experience in asset allocation and investment management, traditional capital and liquidity sources, and wealth transfer opportunities and execution.

  • Joyce Shepet

    Joyce Shepet, a resident of Pewaukee, has a passion for the lakes.   She served on the Pewaukee Lake Water Ski Club Board of Directors for nine years and headed up club fundraising events, including the Lake Country Clean Water Festival.   Joyce is also a founding board member of the Clean Water Association.  When she isn’t on the water, Joyce is the Media Traffic Manager at GrowthPoint, Inc., a full-service marketing, media and lead management software & service firm.

  • Bill Ochowicz

    William “Bill” Ochowicz can regularly be seen cycling the roads of the rural lake country region.  When not cycling, Bill is busy planning, designing, negotiating, leasing, permitting, and building medical office space for hundreds of physicians and medical groups nationwide.  The Pewaukee resident has been the safety director and route planner for Ride to the Barns for the past several years and is a founder of the Tour of America’s Dairyland bike racing series.

  • Thomas Hofbauer

    Thomas C. Hofbauer is a partner at Axley and Co-Chair of the Construction and Transportation Practice Group. He has more than 30 years of experience in complex litigation in both federal and state courts. Mr. Hofbauer’s practice focuses on commercial litigation, construction claims and disputes, breach of contract, business torts, shareholder disputes; and environmental and toxic tort litigation.

    Tom  serves on the Board of Directors for the Waukesha County Bar Association. When not at work, he enjoys recreational ice hockey, golf, cooking and spending time with his family in Delafield.

  • Donald Gallo – Past President

    Donald P. Gallo, an attorney with Axley Brynelson, LLP , concentrates his practice on environmental, real estate and business matters. Mr. Gallo is also a professional engineer with more than 40 years of experience specializing in environmental engineering and 25 years of experience in law. In addition, he teaches a graduate-level course in environmental law at the Milwaukee School of Engineering.  Don holds a J.D., cum laude, from Marquette University Law School; M.S.C.E., from The University of Akron (Environmental Engineering); and B.S.C.E., with honors, from Tri-State University College of Engineering.

  • Nancy Bonniwell – President

    Nancy Bonniwell is a Shareholder focusing her practice at von Briesen & Roper on estate, business succession and marital property planning, estate administration and business law. She is a frequent presenter on the subjects of estate planning, business succession planning and charitable giving. Nancy is recognized in The Best Lawyers in America® (Trusts and Estates 2012-2018) and was the recipient of the Outstanding Advisor of the Year Award from the Greater Milwaukee Foundation in 2014. Additionally, she was recognized as one of the Wisconsin Law Journal’s “Women in the Law” and is a Fellow of the Wisconsin Law Foundation. Nancy is very involved in the Waukesha County community. She is the Chair of the Town of Delafield Board of Appeals and is a member of the Waukesha County Board of Adjustment.



  • Troy Giles – Secretary

    Troy E. Giles is a shareholder in Reinhart’s Environmental and Real Estate practices where he works with manufacturers, developers, lenders and municipalities in matters involving environmental laws and regulations and general real estate concerns. He has significant experience working with and appearing before state and federal agencies including the US EPA and the WDNR in matters involving environmental reporting and compliance.  Prior to joining Reinhart, Troy served as General Counsel and Director of Business Operations for an engineering and environmental consulting firm where he oversaw the firm’s legal matters, managed outside counsel and drove growth strategies—including the firm’s brand development for more than 10 years.

  • John Koepke – Vice President

    John Koepke is part-owner of fifth generation Koepke Farms, established in 1875, with his Dad, Jim, and Uncles Allan and David.  His passion for “keeping some country in Lake Country” led him to serve as both Supervisor on Oconomowoc’s Town Board and formerly as a board member for the Wisconsin Department of Agriculture, Trade and Consumer Protection’s Working Lands Initiative. He is also a past president of the Waukesha County Milk Producers Cooperative.  Koepke won the Gathering Waters (Wisconsin’s Alliance of Land Trusts) Policymaker of the Year Award in 2012 and in 2011 Koepke Farms won the Leopold Conservation Award for their best management practices. In the Spring of 2013, the Koepke family worked with Tall Pines Conservancy to place 109 acres of their Uncle Harry and Aunt Mabel’s land known as Pleasant View Farms under conservancy easement, meaning it is permanently protected against development.

  • Ray Peebles

    Growing up in Mapleton in the Town of Oconomowoc, Ray Peebles is part of the 5th generation to be involved in the family’s working farm.  He serves as a member of the Conservation Committee.

    Ray is Global Product Marketing Manager for Cooley Group, a company provides solutions for some of the world’s most notable water, chemical and fuel containment and commercial roofing initiatives. He obtained his BA in Business from the University of Wisconsin-Whitewater, has an extensive real estate background and serves as Vice President of FGI, Fabricated Geomembrane Institute, an industry-sponsored institute advancing the use of fabricated geomembranes.

  • Jeanna Schwinn

    Jeanna is a Regional Account Executive for FRITZFINN, an independent medical distributor of value and outcome based solutions focused in advance wound, orthopedic, and surgical care.

    From 2012-2018, Jeanna served as a Senior Civil Engineer Technician at Daar Engineering Corp.  Her projects included serving as Survey Crew Chief for the Northwestern Mutual Tower and Commons building in downtown Milwaukee and management of the Transportation Project Plats produced by Daar with design office and land development office.  She was the Retail Manager of InStep Physical Therapy & Running Center from 2018-2019.

    Jeanna is a high-energy leader with an entrepreneurial mindset. She is very driven not only in her work but also her personal life. Outside of work, she is a member of the Velo Femmes(cycling club), races in the Glacial Trail and 50K North Face trail runs, and is very active with Wheel and Sprocket events. Jeanna began her involvement with Tall Pines Conservancy as a member of the Communications & Outreach committee, which handles event planning, membership development and outreach activities.

  • Mark Wierman – Treasurer

    Mark Wierman joined Ixonia Bank in September of 2014 as its Chief Lending Officer and is currently President. With 30 years experience, Mark’s main responsibilities at the Bank are managing the Bank’s commercial lending team and loan portfolio as well as leading the Bank’s new business development efforts. Prior to joining the Bank, Wierman was a senior leader of Associated Bank’s commercial banking team, heading its asset-based lending group. He is a graduate of University of Wisconsin-Whitewater, where he obtained a Bachelors degree in Business Administration – Finance.

    Wierman is active in several local organizations, including serving on the Finance Committee of the YMCA at Pabst Farms and as Finance Chair of Gethsemane United Methodist Church in Pewaukee. Mark is also a member of the Board of Directors of the Ausblick Ski Hill, and is active in the Association for Corporate Growth. Mark resides in the Oconomowoc area with his wife Debbie.  They have three adult children and two grandchildren.  Mark enjoys outdoor activities such as golfing, fishing, and hunting in his spare time.


Advisory Board

William Biersach

Samuel Bradt

Katie Brumder

Hank Ehrsam

Kevin Flanagan

Laura Gralton

R. Jeffrey Harris

Caran Quadracci

Ted Rolfs

Truman Schultz

Anne Sheedy Seidel

Jeffrey Spence

John Syburg

Steve Traudt