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.
Helmut Ormestad
Helmut Ormestad( 12 May 1913 – 10 August 1993) was a Norwegian physicist.
He was a researcher at the University of Oslo who specialized in acoustics.
He was known for his ability to impart knowledge on physics.
He was a co-writer of the textbook series" Rom Stoff Tid", together with Otto Øgrim and Kåre Lunde, for which he was awarded the Cappelen Prize in 1983.
Martin Guldan
Martin Guldan( born 3 September 1990) is a Slovak football striker who currently plays for SC Volksbank Marchegg.
In February 2008, he was on trial in U.S. Lecce.
Sir Roger Martyn (Lord Mayor of London 1567)
Sir Roger Martyn( or Martin) was a mercer and Lord Mayor of London in 1567; he was also Sheriff of London in 1559.
W. Augustus Barratt
W. Augustus Barratt( 1873- 1947) was a Scottish- born, later American, songwriter and musician.
Marten Ryckaert
Marten Ryckaert or Martin Ryckaert( baptised 8 December 1587, Antwerp – 11 October 1631), was a Flemish painter who was known for his small, usually imaginary landscapes in an Italianate style.
Martin Dobrović
Martin Dobrović or Martin Dubravić( 1599 –1621) was a Catholic priest.
After finishing his education in Graz, he became parsel of Ivanić Grad and later became a canon in the Roman Catholic Archdiocese of Zagreb.
Martim Afonso Chichorro II
Martim Afonso Chichorro II or Martin Alfonso de Sousa( 1280 -?) was a Portuguese nobleman, who served in the Court of Denis of Portugal( his carnal uncle).
Martin of Soure
Martin of Soure or Martin Arias( born in the late 11th century, Auranca, Portugal,- died on January 31, 1146 in Córdoba, Al- Andalus) was a Portuguese captive canon and died in Córdoba.
Pope Marinus II
Pope Marinus II( or Martin III; died May 946) was Pope from 30 October 942 to his death in 946.

Question: Who was born later, Helmut Ormestad or Martin Guldan?
Answer: Martin Guldan