Variant of Darrell. Like its variant Daryl, it is occasionally borne by women, no doubt by analogy with names such as Cheryl. A recent influence on the girl's name is the actress Daryl Hannah (b. 1960).
Welsh: from the personal name Maredudd. In Welsh the stress is on the second syllable. The Old Welsh form is Morgetiud, of which the first element may mean ‘pomp, splendor’ and the second is iudd ‘lord’.