Other Genetic Surnames
There are a number of Townsend males with YDNA test results who match none of known family groups:
The result from Norfolk for Jonathan Townsend is a maternal line as Townsend was his mother's maiden name; the father was not named in the baptismal/birth record. Other men have the Townsend surname but do not match another Townsend and cannot trace their origins far enough back to determine how their line acquired the name. Some have alternate surnames in mind and are working to find the connection, others are non-paternal events where the father is not known.