Yes, it is. Victoria on PBS is inspired by real historical events and figures.
Victoria on PBS is largely based on true events. It attempts to recreate the era and the circumstances surrounding Queen Victoria's reign with a fair degree of accuracy. But as with many TV shows, there might be some fictionalized aspects to enhance the entertainment value.
The show Victoria on PBS does have elements based on true history. It weaves in real events and characters to create an engaging narrative. However, some artistic liberties may have been taken for dramatic effect.