Name	Meaning	Gender	Origin	Similar
Cystenian	Steady; stable.	Male	Welsh	-
Cystennin	Constant.	Male	Welsh	-
Daere	Fiend.	Female	Welsh	-
Dafydd	A Welsh form of the Hebrew name David, meaning beloved or friend.	Male	Welsh	-
Dai	Shines. A Welsh diminutive of David, meaning beloved or friend..	Male	Welsh	-
Dal	Diminutive of David: Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales.	Male	Welsh	-
Dalldav	Legendary son of Cunyn Cov.	Male	Welsh	-
Daned	Legendary son of Oth.	Male	Welsh	-
Daniel	Attractive. A translation of the Welsh name Deiniol.	Male	Welsh	-
Daryn	Great.	Male	Welsh	-
Dave	Diminutive of David: Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales.	Male	Welsh	-
David	Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales.	Male	Welsh	-
Davies	Surname. Variant of David 'beloved.'.	Male	Welsh	-
Davy	Diminutive of David: Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales.	Male	Welsh	-
Davyn	Variant of David 'beloved.'.	Male	Welsh	-
Dee	Dark.	Female	Welsh	-
Delia	Dark.	Female	Welsh	-

Delwen	Derived from the Welsh words for neat and fair.	Female	Welsh	-
Delwin	Godly friend.	Male	Welsh	-
Delwyn	Derived from the Welsh words for neat and fair.	Female	Welsh	-
Delwyn	Godly friend.	Male	Welsh	-
Delyth	Derived from the Welsh words for neat and pretty.	Female	Welsh	-
Dera	Fiend.	Female	Welsh	-
Derwen	From the oak tree.	Female	Welsh	-
Deryn	Bird. From the word 'aderyn'.	Female	Welsh	-
Deverell	from the riverbank	Male	Welsh	-
Deverril	From the river bank.	Male	Welsh	-
Dewey	Devin	Male	Welsh	-
Dewi	Variant of David: Beloved or friend, from the Hebrew. Sixth century St David (or Dewi) was patron saint of Wales.	Male	Welsh	-
Dewitt	blond	Male	Welsh	-
Dicra	Slow.	Female	Welsh	-
Dierdre	Dark.	Female	Welsh	-
Difyr	Amusing.	Female	Welsh	-

Digon	Legendary son of Alar.	Male	Welsh	-
Dilan	Born near the sea.	Male	Welsh	-
Dillan	Variant of Dylan: Ocean's son.	Male	Welsh	-
Dillie	Born near the sea.	Male	Welsh	-
Dillon	Born near the sea.	Male	Welsh	-
Dillus	Legendary son of Eurei.	Male	Welsh	-
Dillwyn	Variant of Dilwyn: Blessed truth.	Male	Welsh	-
Dilwyn	Blessed truth.	Male	Welsh	-
Dilys	genuine	Female	Welsh	-
Dirrnyg	Legendary son of Caw.	Male	Welsh	-
Donne	Used in honor of 17th century poet John Donne.	Male	Welsh	-
Dover	Water. A British seaport on the English channel.	Male	Welsh	-
Drem	Sight.	Male	Welsh	-
Dremidydd	Legendary father of Drem.	Male	Welsh	-
Drew	Wise.	Male	Welsh	-
Druce	Son of Drew.	Male	Welsh	-

Drudwas	Legendary son of Tryffin.	Male	Welsh	-
Druson	Son of Drew.	Male	Welsh	-
Drych	Legendary son of Kibddar.	Male	Welsh	-
Drysi	Thorn.	Female	Welsh	-
Drystan	Welsh form of Tristan 'full of sorrow'.	Male	Welsh	-
Dryw	Wise.	Male	Welsh	-
Drywsone	Son of Drew.	Male	Welsh	-
Du	Dark.	Female	Welsh	-
Duach	Legendary son of Gwawrddur.	Male	Welsh	-
Dylan	sea god, son of the waves	Male	Welsh	Dillon, Dillan
Dyllan	From the sea.	Male	Welsh	-
Dyllon	From the sea.	Male	Welsh	-
Dynawd	Donation.	Male	Welsh	-
Dyvynarth	Legendary son of Gwrgwst.	Male	Welsh	-
Dyvyr	Legendary son of Alun.	Male	Welsh	-