Did any Habsburg use Mathew, while we're being picky?
Good.
No one (well, compared to Prussia and England) loves Austria.
There's Matthias (II), Holy Roman Emperor and King of Hungary. Close enough, for me.
Here's something I wrote that a select few have seen already:
14 May 1717[1]
Hofburg Palace, Vienna, Archduchy of Austria, Holy Roman Empire
Emperor Charles VI paced furiously in his room. His wife Elisabeth had gone into labor, and was giving birth. He had reason to fret about this birth, for even though Elisabeth had borne him a son, Leopold, the boy died early.
Austria, under the imperial House of Habsburg, had managed to retain its prestigious position in Europe. Although it had lost the position of pre-eminent power to France after the Thirty Years’ War, as well as the Spanish throne when the Spanish line went extinct with Charles II, in the meantime the Austrian branch had recovered most of Hungary after defeating the Turk. Austria also received the southern Netherlands after the War of the Spanish Succession, which whilst putting Louis XIV’s grandson Philip of Anjou on the Spanish throne as Philip V, granted a lot of concessions to France’s rivals, particularly Britain.
For that matter, however, Charles VI felt the Habsburg line was in great jeopardy. His elder brother and predecessor as Emperor, Joseph I, died without any sons. Charles VI had signed an agreement proposed by their father Leopold I that should either of them have no sons, Joseph’s daughters would be favored in the succession. However, Charles ignored this, leading to the Pragmatic Sanction of 1713, whereupon the realms of the House of Habsburg would be declared indivisible and allow succession through females. For this reason, Charles was very anxious.
Just then, the doctor entered. “Mein Kaiser”, he began, “a great congratulations to you. It is a healthy baby boy[2].”
Charles smiled. The succession of the House of Habsburg was secured.
[1]The date is one day later than OTL, because of minor butterflies resulting from the POD, which was nine months prior…
[2]And this is the result. No Maria Theresa TTL.