Table:
0
A
B
C
D
E
F
1
Order
Name dates
Princess Royal from (date) to (date)
Parent
Date married
Husband dates
2
1
Mary, Princess Royal 1631–1660
1642–1660
Charles I 1600–1649
1641
William II, Prince of Orange 1626–1650
3
2
Anne, Princess Royal 1709–1759
1727–1759
George II 1683–1760
1734
William IV, Prince of Orange 1711–1751
4
3
Charlotte, Princess Royal 1766–1828
1789–1828
George III 1738–1820
1797
King Frederick I of Württemberg 1754–1816
5
4
Victoria, Princess Royal 1840–1901
1841–1901
Victoria 1819–1901
1858
Frederick III, German Emperor 1831–1888
6
5
Louise, Princess Royal 1867–1931
1905–1931
Edward VII 1841–1910
1889
Alexander Duff, 1st Duke of Fife 1849–1912
7
6
Mary, Princess Royal 1897–1965
1932–1965
George V 1865–1936
1922
Henry Lascelles, 6th Earl of Harewood 1882–1947
8
7
Anne, Princess Royal 1950–
1987–present
Elizabeth II 1926–
1973–1992
Mark Phillips 1948-
9
7
Anne, Princess Royal 1950–
1987–present
Elizabeth II 1926–
1992
Sir Timothy Laurence 1955–

Questions and formulas:
Question: Who was the parent on the order of 6?
Formula: LET(query1,SUMMARIZE(D1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,2)=6))
Formula2: LET(query1,SUMMARIZE(D2:D9,SUMX(A2:A9)),FILTER(query1,CHOOSECOLS(query1,2)=6))
Level: hard
Question: Who was the husband date that was married in 1858?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1=1858),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,E2:E9=1858),6))
Level: medium