The other is Mickael dos Santos, a French-born, once devoutly Catholic son of a Portuguese immigrant family settled near Paris.
Separately, France opened a terrorism investigation yesterday after three unidentified French recruits to Isis - talking with southern French accents - appeared in a propaganda video. They were seen burning French passports and calling for attacks on unnamed targets in France.
A survey published this week suggests a great number of French jihadists come from relatively prosperous and non-Islamic backgrounds. The report, by an anti-sectarian think tank, found that the great majority of the 50 recruits studied were recent converts to Islam and ethnically French.
Almost all came from non-religious families. Over 80 per cent come from relatively well-off backgrounds. Over 90 per cent were recruited - or had radicalised themselves - through watching videos on the internet.
The survey covered only those jihadists whose families had approached the centre or agreed to be interviewed. It almost certainly undercounts French jihadists from Muslim backgrounds. Of these, 376 are believed to be fighting in Syria and Iraq. Another 49 have been killed. An estimated 213 have returned.
Professor Jean-Pierre Filiu, a French historian who specialises in Islam, says the high proportion of "converts" in Isis ranks should not be a surprise. "[Isis] has nothing to do with Islam," he said. "We insist on seeing this as a religious phenomenon but it is a political phenomenon. [Isis] is a sect which attacks other Muslims ... It has an apocalyptic narrative, just like the other sects that you can find on the internet. It is a creature of the Facebook generation."
The survey of French jihadists published this week also points to the role of "indoctrinating" sites on the internet, which appeal to psychologically vulnerable young people by imitating video games. Young people are told they have been "chosen" to fight a "just cause".
This analysis fits closely the profile of the two young men who appeared in the Isis video placed online this week. Hauchard - now known as "Abu Abdahhah" or "al-Faransi" (the Frenchman) - comes from Bosc-Roger-en-Roumois, a semi-rural suburb of Rouen in Normandy.
Since his image appeared earlier this week in Isis uniform and black beret, neighbours have recalled a "gentle boy". Five years ago, he converted to Islam and began to wear Islamic robes. He "self-converted" after visiting Islamist sites on the net.
His fellow killer, dos Santos from Champigny-sur-Marne, is a third generation Franco-Portuguese. He is a former student of painting and decorating. His school sweetheart, "Elisabeth G", recalled a carefree but pious young Catholic.
In 2009, he began to visit Islamic sites on the internet. Elisabeth said: "He became radical overnight. He said to me, 'Either you convert and you leave school and wear the headscarf or we can't see each other any more'."
Queen hits out at Isis
Queen Rania of Jordan has warned Isis is trying to hijack the Arab world and drag it back to the Dark Ages via social media during a powerful address in Abu Dhabi.
She used her opening speech at the Abu Dhabi Media Summit this week to condemn the atrocities committed by the group across swathes of Syria and Iraq.
She urged the audience to harness the same tools used by Isis to spread its agenda and use them to push forward a more progressive one from the Arab world.
"A minority of extremists are using social media to rewrite our narrative and hijack our identity,' she told the conference. "That's what Isis is doing to the Arab world and all of us."
Referring to videos showing beheadings of Western hostages and Syrian servicemen, the Jordanian Queen told the conference: "These images don't represent me any more than they represent you.
"They're alien and abhorrent to the vast majority of Arabs -- Muslims and Christians. And they should make every Arab across this region seethe."
- Independent
