Spencer and the variant spellings listed below are of interest as we attempt to confirm - or rule out - early relationships among the many Spencer lines. Numerous matches have occurred which confirm relationships that are also supported by solid documentation. For other Spencer lines, Y-DNA matches have provided the much needed scientific proof of a common ancestor which cannot otherwise be proven due to the lack of extant paper records.

The Spencer Y-DNA Project seeks to prove descent from common ancestors and thus provide pointers for further research in a focused area.