When Indian attacks on the then-frontier town became too much, Duggan moved his family, eventually settling just east of Seguin in present-day Guadalupe County, Texas. When Guadalupe County was organized in 1846, he was its first County Clerk.
Duggan was compelled to relocate his family due to excessive Indian attacks on the frontier town, and they eventually settled near Seguin in Guadalupe County, Texas. In 1846, when Guadalupe County was formed, Duggan took on the role of its first County Clerk.