Saint James the Greater was killed by King Herod and the first of the apostles to die. He was martyred in AD44.
James
John
We know nothing about what happened to any of the apostles, except perhaps Judas. There are various traditions from the second to the fourth century that claim that all the apostles were martyred, except the apostle John. These traditions are not to be taken as historical accounts.
Yes he was, because he was Martyred for the faith.
He was martyred while in prayer in India.
The first 16 popes were martyred for their faith.
Because that is where St. Peter the Apostle was martyred.
The apostle John is believed to be the only one among the twelve apostles who was not martyred. He died of natural causes and is often referred to as the beloved disciple in the Bible.
The Apostle Thomas was one of the 12 disciples of Jesus Christ. He is known for his initial doubt of Jesus' resurrection, leading to the phrase "doubting Thomas." Thomas later expressed faith in Jesus, spreading Christianity to India where he is believed to have been martyred.
Euphemia
Because that is where St. Peter the Apostle was martyred.
There is no historical evidence to suggest that Tertullian was martyred for the faith. It is believed that he died of natural causes, possibly around the year 225 AD.
He was martyred for his faith.