You would need last names at LEAST to figure out demitrius and darius,the twins',ages. If there are multiple people with the same first and last name then you would need a specific detail about them to separate them from the rest of the "demetrius and darius so-and-soes" in the rest of the world. Plus it would help to know if they are identical twins or not to figure out their ages.
(Person that asked the question)-Once twins are born, and old enough to determine whether they are identical or fraternal, how do you know if they are identical, or just fraternal twins that look identical? I was just curious.
Nonidentical twins Dizygotic twins (commonly known as fraternal twins, but also referred to as non-identical twins or biovular twins)
Conjoined twins or siamese twins.
They are called: fraternal or dizygotic twins. Twins who develop in one amniotic sac are called identical or monozygotic twins.
Monozygotic Twins
As of the end of the 2013-2014 NFL season Demetrius Rhaney is -- years old.
As of the end of the 2013-2014 NFL season Demetrius McCray is 23 years old.
As of the end of the 2013-2014 NFL season Demetrius Harris is 22 years old.
As of the end of the 2013-2014 NFL season Demetrius Wright is 22 years old.
Canadian actor Demetrius Joyette is 25 years old (birthdate March 14, 1993).
Louis Demetrius Alvanis is 50 years old (birthdate: December 21, 1960).
Demetrius Vikelas was born on February 15, 1835 and died on July 20, 1908. Demetrius Vikelas would have been 73 years old at the time of death or 180 years old today.
No one knows how old she is.
Darius died at age 64
Darius Songaila is 33 years old (birthdate: February 14, 1978).
Darius Vassell is 31 years old (birthdate: June 13, 1980).
Darius Boyd is 24 years old (birthdate: July 17, 1987).