Question: The ruler who the Welser were financiers for when they rose to great prominence in international high finance was born on what date? 

Context articles: Busan International High School
Charles V, Holy Roman Emperor
Michael Ridpath
Osaka YMCA International High School
Susan Faludi
Cheswold Lane Asset Management
Welser
Banksia Park International High School
International High School at Prospect Heights
High Finance (1956 TV series)

Busan International High School () is a prominent high school located in Busan, South Korea specializing in the humanities & social science.
 Busan International High School is a co-educational public high school, opened in 1997 for the purpose of preparing students as experts in international relations.
 Schools for this purpose are called "International High Schools," and Busan International High School is one of them along with Cheongshim International High School and Seoul International High School.
 These schools are classified as "Special Purpose High Schools" ("teuksu mokjeok godeung hakgyo" 특수목적고등학교).
Charles V (Spanish: "Carlos" ; German: "Karl" ; Dutch: "Karel"; Italian: "Carlo" ) (24 February 1500 – 21 September 1558) was ruler of both the Spanish Empire from 1516 and the Holy Roman Empire from 1519, as well as of the lands of the former Duchy of Burgundy from 1506.
 He voluntarily stepped down from these and other positions by a series of abdications between 1554 and 1556.
 Through inheritance, he brought together under his rule extensive territories in western, central, and southern Europe, and the Spanish colonies in the Americas and Asia.
 As a result, his domains spanned nearly four million square kilometers and were the first to be described as "the empire on which the sun never sets".
Michael Ridpath is an English author of thrillers involving the world of high finance.
 He was born in Devon in 1961 and grew up in Yorkshire.
 He was educated at Millfield School and Merton College, Oxford, and spent eight years working as a bond trader at an international bank in the City of London.
 His past employers include Saudi International Bank and Apax Partners.
Osaka YMCA International High School (大阪YMCA国際専門学校 , Õsaka YMCA Kokusai Senmon Gakkō , or 大阪YMCAインターナショナルハイスクール) is an international high school in Nishi-ku, Osaka, established by the Osaka YMCA in 1988.
Susan Charlotte Faludi (born April 18, 1959) is an American feminist journalist and author.
 She won a Pulitzer Prize for Explanatory Journalism in 1991, for a report on the leveraged buyout of Safeway Stores, Inc., a report that the Pulitzer Prize committee commended for depicting the "human costs of high finance".
 She was also awarded the Kirkus Prize in 2016 for "In the Darkroom".
Cheswold Lane Asset Management was a mutual fund company founded in 2006 by Colleen Quinn Scharpf, Eric Scharpf and Matthew Taylor and headquartered in West Conshohocken, Pennsylvania, United States.
 They offered an international high dividend strategy, focused on developed markets in Europe and Asia.
 They managed both separate accounts and a no-load mutual fund: the Cheswold Lane International High Dividend Fund equity fund.
Welser was a German banking and merchant family, originally a patrician family from Augsburg, that rose to great prominence in international high finance in the 16th century as financiers of Charles V, Holy Roman Emperor.
 Along with the Fugger family, the Welser family controlled large sectors of the European economy, and accumulated enormous wealth through trade and the German colonization of the Americas.
 The family received colonial rights of the Province of Venezuela from Charles I, King of Spain, in 1528, becoming owners and rulers of the South American colony of Klein-Venedig (within modern Venezuela), but were deprived of their rule in 1556.
 Philippine Welser (1527–1580), famed for both her learning and her beauty, was married to Archduke Ferdinand, Emperor Ferdinand I's son.
Banksia Park International High School is a high school in Banksia Park, a suburb of Adelaide, South Australia.
 It has about 650 students.
 The school has a large and well-established international programme, started in 2000, and is accredited as an International High School by the Council of International Schools.
International High School at Prospect Heights is one of four schools on the former Prospect Heights High School campus in Brooklyn, New York.
 An Empowerment School, International High addresses the needs of recent immigrant students.
 The International High School @ Prospect Heights empowers recent immigrant students by teaching them fluency in reading, writing, speaking, and understanding English through a rigorous curriculum that is language rich, interdisciplinary, and project-based.
 Students learn to think critically, navigate societal constructs and prepare for college and other educational opportunities after high school.
 Students, staff and families create a caring school environment that promotes collaboration, cross-cultural interaction, and appreciation of diversity.
 Above all, International High School students become successful contributing members of society and conscientious global citizens of the future.
High Finance is a quiz show created and hosted by Dennis James which aired on CBS from July 7 to December 15, 1956.
 It followed "Gunsmoke" on the CBS schedule.
 "High Finance" aired at 10:30 p.m. Saturdays opposite NBC's "Your Hit Parade."