Birth Name: David John LeMahieu
Place of Birth: Visalia, California, USA
Date of Birth: July 13, 1988
Ethnicity: French, Polish, possibly German, and English
Family Background: DJ LeMahieu is an American professional baseball second baseman for the New York Yankees of Major League Baseball (MLB).
DJ LeMahieu is the son of Thomas Jay LeMahieu and Joan (Kleinwassi) LeMahieu.
LeMahieu’s paternal grandparents may have been James Robert LeMahieu and Helen Dorothy Koller.
Source: https://www.findagrave.com/memorial/41596183 (possible paternal grandfather)
https://search.ancestry.com/cgi-bin/sse.dll?viewrecord=1&r=an&db=FindAGraveUS&indiv=try&h=9544268 (possible paternal grandmother)