He became the first President of the Republic of Texas on 22 October 1836.
That man would be Sam Houstan. He led the Texas army at The Battle of San Jacinto and later became the first President of Texas. Texas was its own country for about 8.5 years!
On 5 September 1836 he became the first President of the Republic of Texas.
Yes, when he first became the President of the Republic of Texas.
Jackson
Sam Houston
Johnson
Sam Houston was the first President of the Republic of Texas.
James.k.polk
I suspect you mean 1836, not 1863, since the last President of Texas left office in February of 1846, after Texas became a state of the United States. David G. Burnet was elected Interim President in 1836 by the convention that assembled to issue Texas' Declaration of Independence from Mexico. Later that year Sam Houston was elected by popular vote to be the first President of Texas. He was also the third President of Texas (the Texas Constitution did not have term limits, but it did not allow anyone to serve consecutive, or back to back, terms).
Henry Dunster was the first college president in what became the US. He became president of Harvard in 1640.
It became bigger and better then eventually when away because Texas joined the US.