Meet the Martin Insurance Team

Amy Marberger

Commercial Lines Agent (Ext. 17)

In 2001, Amy joined the Martin Insurance sales team to sell our lines of commercial and farm insurance, as well as health Insurance. Her current responsibilities at the agency are to manage all of the commercial and farm business, as well as assist Liz in managing the overall agency. Amy enjoys the fast pace environment in which she works and strives to keep her clients happy and well protected.

Amy was born and raised on the Eastern Shore of Maryland, came to Pennsylvania to attend Millersville University after high school, and has called this area home ever since. In her spare time, she thoroughly enjoys gardening, cooking and being outdoors.

Karen Conley

Group and Individual: Health, Life, Disability, Dental and Vision Agent (Ext. 18)

Karen joined Martin Insurance in December 2010. Her position involves servicing clients' group health, ancillary benefits, and individual health policies. Karen also works on renewals and does quoting for new business.

Karen has 13 years of experience in the group benefits field, following 28 years in medical and general office administration.

In her spare time Karen especially enjoys activities with friends and her family. She also cares for a number of rescued animals, including an ex-buggy horse; and enjoys gardening, reading, and singing with two Welsh choirs.

Sandi Yost

Commercial Lines Customer Service Agent (Ext. 14)

Sandi joined Martin Insurance in January 2008 as a Commercial Lines Customer Service Representative and Agent. She processes endorsements, renewals, certificates of insurance, claims, payments and answers client's insurance questions. Sandi holds a CISR designation (Certified Insurance Service Representative)

In her spare time Sandi enjoys dining out, going to parks, traveling and spending time with her family and friends.

Gwynneth Mann


Gwynneth returned to Martin Insurance as our bookkeeper in 2007 after leaving the position she held from 1998-2003. Gwynneth takes care of all the bank business at Martin Insurance. She also handles accounts payable and receivable, manages payroll, and feeds the office fish.

Gwynneth is a self-taught bookkeeper and also takes care of the books for the business she owns with her husband.

Gwynneth is a graduate of Millerville State College and has 2 grown sons and a small dog. She enjoys the holidays, flea markets and going to the beach, any beach, anytime.

Dana Grimm

Personal Lines Sales Agent (Ext. 15)

Dana joined Martin Insurance Agency personal lines team in March 2010. She is a personal lines Customer Service Representative helping to answer client's questions, processes claims, payments and endorsements, and does requoting. She began her insurance career in 1985 in the life and health business. After giving birth to her two boys she changed her career path for a few years but now has happily returned to her career in insurance.

When she is not at work, Dana enjoys watching her 2 boys participate in sports, board games and her two dogs. She also enjoys the beach, the mountains, and reading a good book.

Joanne Bury

Personal Lines Customer Service Agent (Ext. 16)

Joanne joined Martin Insurance in 2009 as the receptionist providing administrative support to the Personal Lines Team. In September 2010 she was promoted to Personal Lines Customer Service Representative and Agent. She processes endorsements, claims, re-quoting, payments and answers clients insurance questions.

In her spare time Joanne can be found at her son's sporting events cheering him on or watching her daughter in youth cheerleading. She also enjoys dining out, the beach and spending time with her family, especially at their rural getaway in Southern York County.

Kathleen M. Schrum

Personal Lines Customer Service Agent (Ext. 22)

Kathleen has been with Martin Insurance since 2007. With over 30 years of property casualty insurance experience, Kathleen is available for all your personal lines customer service needs.

Kathleen received the National Alliance for Insurance Education and Research's Certified Insurance Service Representative (CISR) designation in 1999 and is a member of the Society of Certified Insurance Service Representatives. She has also received the CPIA (Certified Professional Insurance Agent) designation of the American Insurance Marketing and Sales Society.

Kathleen likes to spend time traveling, flower gardening and going to car shows.

Amy Harper

Personal Lines Team Support (Ext. 21)

Amy Harper joined the personal lines team at Martin Insurance Agency in the Summer of 2008 where she provides administrative support to the department's sales staff.

After nearly a decade living and working as a costume and textile historian in New York City, Amy settled in Lancaster County in 2002 and began her career in personal lines insurance. Married to journalist husband, Doug, for 6 years, the two have been blessed with a beautiful daughter, Lily. In her spare time, Amy is a passionate artisan bread baker, experienced knitter, accomplished seamstress, and avid gardener.

Sara Johnstone

Personal Lines Customer Service Agent (Ext. 19)

Sara Johnstone joined Martin Insurance Agency in January of 2013. She is a personal lines customer service agent and processes endorsements, claims, provides re-quoting, taking payments and answering client insurance questions. She has over 15 years experience in the insurance industry and recently achieved her CISR (Certified Insurance Service Representative) designation.

Originally from Pen Argyl, Pennsylvania, Sara moved to the Lancaster area in 2006. She says that the most enjoyable part of working in insurance is meeting new people and developing relationships with her customers. In her spare time, Sara enjoys spending time with her husband and 2 children as well as cooking and baking.