
D. can refer to, usually as an abbreviation: ...
Found on
http://en.wikipedia.org/wiki/D.

Dat, Dedit, De, Decimus, Decius, Decretum, Decurio, Deus, Dicit, Dies, Divus, Dominus, Domus, Donum.
Found on
http://www.translationdirectory.com/glossaries/glossary113.htm

Deus, Dominicus, Dominus, Dux. (plural: DD)
Found on
http://www.translationdirectory.com/glossaries/glossary114.htm

Dutch (sometimes Daniel)
Found on
http://www.translationdirectory.com/glossaries/glossary118.htm

dimidium ie half
Found on
http://www.tudorrevels.co.uk/glossary.php
No exact match found.