Though the Saxon House had been the chief protectors of the Reformation, Frederick Augustus I.had, on being elected to the throne of Poland, become a Roman Catholic; and thereby the connection between the two branches of the House had to a great extent ceased.

The second line, that of the Ernestines, ruled over Thuringia, but, according to the common German custom, had again broken up into numerous branches, among which the Duchies of Thuringia were parcelled out.

At the time of the Queen's birth there were five of these, viz., Gotha-Altenburg, Coburg-Saalfeld, Weimar-Eisenach, Meiningen, and Hildburghausen.

On the extinction of the Gotha line, in 1825, there was a rearrangement of the family property, by which the Duke of Hildburghausen received Altenburg, Gotha was given to the Duke of Coburg, and Saalfeld with Hildburghausen added to Meiningen.

These four lines still exist.
The Ernestine princes had, by this constant division and sub-division, deprived themselves of the opportunity of exercising any predominant influence, or pursuing any independent policy in German affairs; and though they had the good fortune to emerge from the revolution with their possessions unimpaired, their real power was not increased.