Pope Celestine III crowning Henry VI with his feet — He was only crowned after promising to cede Tusculum.
Photo Credit: By John Foxe (publisher) - Public Domain, https://commons.wikimedia.org/w/index.php?curid=33480998

Henry VI, Holy Roman Emperor —
Photo Credit: By Master of the Codex Manesse (Foundation Painter) - Public Domain, https://commons.wikimedia.org/w/index.php?curid=189038

Lothair III, Holy Roman Emperor — in the Codex Eberhardi, Fulda monastery 1150/60
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=30426900

Queen Victoria with the Princess Royal, ca. 1844-45 —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=11617960

Victoria's wedding — by John Phillip
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=32200437

Victoria, Princess Royal, 1867 —
Photo Credit: By Franz Xaver Winterhalter - Public Domain, https://commons.wikimedia.org/w/index.php?curid=228740

Albert (left) with his elder brother Ernest and mother Louise, shortly before her exile from court —
Photo Credit: By Ludwig Döll - Public Domain, https://commons.wikimedia.org/w/index.php?curid=23915225

Prince Albert, 1840 — By John Partridge - The Royal Collection
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=18263070

Ernst I, Duke of Saxe-Coburg and Gotha — Dawe 1818-19
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=18253329

William's proclamation as Emperor — Frederick is standing behind his father, while his brother-in-law, the Grand Duke of Baden leads the cheering.
by Anton von Werner
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=2481294

Frederick III, German Emperor —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=6032415