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's family relocated from the besieged frontier town to a safer location east of Seguin in present-day Guadalupe County, Texas. When Guadalupe County was founded in 1846, Duggan became its initial County Clerk.