Yelena Potapenko
Yelena Potapenko( born 20 April 1993), also known as Olena Potapenko or Elena Potapenko, is a Ukraine- born Kazakhstani modern pentathlete.
She participated in the 2016 Summer Olympics and the 2018 Asian Games.
John Brown Clark
John Brown Clark or Clarke CBE LLD FRSE( 30 April 1861 – 19 July 1947) was a Scottish mathematician.
He was headmaster of George Heriot ’s School from 1908 to 1926.
He served as Vice President of the Royal Society of Edinburgh 1931 – 34.
Ella Clark
Ella Clark( born 8 February 1992) is a British female professional basketball and netball player.
Jacob Loose
Jacob L. Loose( June 17, 1850- September 18, 1923) was born in Greencastle, Indiana.
He attended high school in Decatur, Illinois, and at the age of 20 moved to Kansas, where he opened a dry goods store with his brother in Chetopa.
In 1878, he married Ella Clark from Carthage, Missouri.
The couple moved to Kansas City in 1882 and entered the cracker business.
He founded Loose- Wiles Biscuit Company, which was a huge success.
Charles W. Clark (businessman)
"For the singer, see Charles W. Clark."
Charles Walker Clark, also known as "C. W. Clark" or "Charlie Clark" (November 3, 1871 – April 3, 1933), was an American businessman and the eldest son of William Andrews Clark Sr., one of the Copper Kings.
Elena Lyadova
Elena Igorevna Lyadova( born 25 December 1980) is a Russian actress.
In 2002, she graduated from Mikhail Shchepkin Higher Theatre School in Moscow, Russia.
Her film credits include" Elena"( 2011)," The Geographer Drank His Globe Away"( 2013)," Leviathan"( 2014) and" Orlean"( 2015).
W. Augustus Barratt
W. Augustus Barratt( 1873- 1947) was a Scottish- born, later American, songwriter and musician.
Catherine I of Russia
Catherine I( born, later known as Marta Samuilovna Skavronskaya; –) was the second wife of Peter the Great and Empress of Russia from 1725 until her death.
Melvin Clark George
Melvin Clark( or" Clarke")
George( May 13, 1849 – February 22, 1933) was a U.S. Representative from Oregon.
Bobby Clack (actor)
Bobby Clack( January 3, 1926- April 3, 1986) was an American film actor during the Western B-movies era.
Sometimes he is credited as Bobby Clark or Dusty Dixon.
His father, Arnold Clack, also was a film actor.
Clack was born in Spiro, Oklahoma, and died in Oregon at the age of 60.

Question: Who was born later, Ella Clark or Elena Lyadova?
Answer: Ella Clark