Dr Merrithew was born in Washington DC in 1946. He moved to Flint, Michigan in 1953 and graduated from Flint Northern in 1964.
After graduation he served as a missionary for the LDS church for 2 1/2 years at his own expense in Hong Kong and the Philippines. Upon returning home, he re-entered college and finished in 1973 with a bachelors in Veterinary Science and a Doctor of Veterinary Medicine. He has lived in the area all his life and still lives in Grand Blanc. He has 5 children and 11 grandchildren.