Prince Harry has become the royal family's most famous litigant in London. The Duke of Sussex has five active legal cases, three of them involving his battle with the British tabloids.

If Harry testifies as scheduled Tuesday in his lawsuit against the publisher of the Daily Mirror, he'll be the first member of the royal family to do so since the late 19th century, when Queen Victoria's eldest son, Prince Albert Edward, testified twice in court.

The last senior royal to give evidence in this way was in the 19th Century, when Edward VII, as Prince of Wales, appeared in two cases - one in a dispute over card cheating and the other in a divorce case, in which the prince denied any "improper familiarity".

If Harry testifies as scheduled Tuesday in his lawsuit against the publisher of the Daily Mirror, he’ll be the first member of the royal family to do

The Duke of Sussex is set to testify in the first of his five pending legal cases, with opening arguments scheduled for Monday.