Lynn's older brother, Merrill E. Stalbaum, also served in the Wisconsin Legislature as a member of the Wisconsin State Assembly and overlapped with Lynn Stalbaum's service during the 1961 and 1963 legislative sessions, making them the only siblings to serve together in the Wisconsin Legislature until Scott and Jeff Fitzgerald in 2001–2013.
Merrill E. Stalbaum, Lynn's older brother, also served in the Wisconsin Legislature as a member of the Wisconsin State Assembly during the 1961 and 1963 legislative sessions, overlapping with Lynn Stalbaum's service until Scott and Jeff Fitzgerald from 2001 to 2013. They were the only siblings to serve together.