When Queen Victoria was born what was her position in line to the throne?

At birth, Victoria was fifth in the line of succession after the four eldest sons of George III: George, the Prince Regent (later George IV); Frederick, the Duke of York; William, the Duke of Clarence (later William IV); and Victoria's father, Edward, the Duke of Kent.

The Prince Regent had no surviving children, and the Duke of York had no children; further, both were estranged from their wives, who were both past child-bearing age, so the two eldest brothers were unlikely to have any further children.

The Duke of Clarence and the Duke of Kent married on the same day in 1818, but both of Clarence's daughters (born in 1819 and 1820) died as infants. Victoria's father died in January 1820, when Victoria was less than a year old. A week later her grandfather died and was succeeded by his eldest son, George IV.

The Duke of York died in 1827. When George IV died in 1830, he was succeeded by his next surviving brother, William IV, and Victoria became heir presumptive. The Regency Act 1830 made special provision for the Duchess of Kent (Victoria's mother) to act as regent in case William died while Victoria was still a minor. King William distrusted the Duchess's capacity to be regent, and in 1836 he declared in her presence that he wanted to live until Victoria's 18th birthday, so that a regency could be avoided.