The paternal relationship between Thomas Curtis and his daughter
Lusadie Curtis is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant SW.
The segmental (via DNA segment triangulation) and total DNA shared between SW and other confirmed descendants of TC/
Frances Sinclair is consistent with the expected ranges for their respective relationships. Since SW descends from TC/Frances Sinclair through Thomas Curtis and his daughter Lusadie Curtis, the presence of significant shared DNA between SW and other known descendants of TC/Frances Sinclair validates the generational links along this paternal line.
This supports the conclusion that DNA was passed from MRCA couple TC/Frances Sinclair through Thomas Curtis to Lusadie Curtis, and ultimately to SW, confirming this direct ancestral connection through multiple generations.