The probable origins date back to the Counts of Monfort, such sentiment has been displayed by writers such as Wolfgango Lazio, from ancient manuscripts of the library of the princes Landi of the Val di Taro  which contains clear history regarding the most illustrious families of Northern Italy and finally, from the ancient papers of the precious deposit of the archives of the Counts of Attems, which more accurately confirm their origin from the Counts of Monfort.
From there it is also possible to discern the family's coat-of-arms of the Trident, typical of the Monfort Dukes of Franconia.
Enrico, son of Rodolfo, count of Bregenz and Monfort, participated in the wars of Italy led by Frederick I, Holy Roman Emperor.
The sons of Rodolfo, Enrico and Arbeno (undoubted descendants of today's Attems of the Trident), were close to the patriarch Vodalrico which was consequently fraternal to the Emperor Frederick both in friendship and in blood.

The town of Attimis was born as a village under the castle of the Lords of Attems.
The latter was donated initially by the Marquis of Moosburg i.e. the Archbishop of Salzburg Bertoldo of Moosburg to the Church of Aquileia, i.e. the Patriarchate.
 It was subsequently conferred to Enrico and Arbeno Attems by the grateful patriarch in recognition of the faithful services provided in the wars with Frederick I. The family had properties and influence among the fiefs of Friuli at the time when the lands were governed by the Patriarchs of Aquileia.

It is certain that Attems (Attimis), already in the eleventh century was a marquisate, even before Enrico and Arbeno had received it as a fief by the patriarch Voldarico.
We are equally in the dark as to who and what time this title was conferred.

Two were the castles of Attimis: the Upper and the Lower one.
The former is extremely ancient, it is composed of a tower and two turrets.
The lower castle was instead built between 1250 and 1260 and its territory was extremely vast.
Between its borders it embraced many villages of the promontory, and spread out in the plains until the vicinity of Udine in that territory Raimondo della Torre knighted Enrico son of Alberto count of Gorizia and other Alemannic barons and lords of Friuli.

In 1387 the family was allied, like many others, to the Counts da Camino and to the Princes Da Carrara.
The family hired the venture captain Bello di Portogallo and his mercenaries, which, attending compensation for their service, took the Attems’ Lower Castle as guarantee.
The 10th of February 1387 these payments were settled and the stronghold returned.
That same year, Udine sent to Attimis cannons and different military instruments aimed at the defence of the lower stronghold, which made it amongst the first ones in Italy to possess such weaponry.

Meanwhile, the Upper castle of Attimis fell into ruin, and the same faith overtook the lower one not much after (1484) due to widespread utilisation of bombard cannons.
 In light of such the Attems built at the base of the hill a fortified manor which the Italian branch of the family resided in until 1944 when it was burnt down by the Nazifascist regime.

After the conquest of Friuli by the Republic of Venice and the incorporation into the Domini di Terraferma by 1433, a part of the family remained in Attimis while Frederick of Attems (1447–1521) moved to Gorizia (Görz), where in 1473 he became chancellor to the last Count Leonhard.
When the latters comital line became extinct in 1500, he was confirmed in that office (Count) by the Habsburg emperor Maximilian I and in 1506 even was appointed governor of the Gorizia on behalf of the Inner Austrian archdukes.

Frederick's heirs split into the cadet branches of Heiligenkreuz and Petzenstein.
Since then, the Attems family played an important role in the Habsburg Monarchy; both lines were elevated to the rank of Freiherren (Barons) in 1605 and given the title of Reichsgrafen (Counts of the Holy Roman Empire) in 1630 (Heiligenkreuz) and 1653 (Petzenstein).

Notable member was Karl Michael von Attems, born in Gorizia on the first of July 1711,
The probable origins date back to the Counts of Monfort, such sentiment has been displayed by writers such as Wolfgango Lazio, from ancient manuscripts of the library of the princes Landi of the Val di Taro  which contains clear history regarding the most illustrious families of Northern Italy and finally, from the ancient papers of the precious deposit of the archives of the Counts of Attems, which more accurately confirm their origin from the Counts of Monfort. From there it is also possible to discern the family's coat-of-arms of the Trident, typical of the Monfort Dukes of Franconia. Enrico, son of Rodolfo, count of Bregenz and Monfort, participated in the wars of Italy led by Frederick I, Holy Roman Emperor. The sons of Rodolfo, Enrico and Arbeno (undoubted descendants of today's Attems of the Trident), were close to the patriarch Vodalrico which was consequently fraternal to the Emperor Frederick both in friendship and in blood.
The town of Attimis was born as a village under the castle of the Lords of Attems. The latter was donated initially by the Marquis of Moosburg i.e. the Archbishop of Salzburg Bertoldo of Moosburg to the Church of Aquileia, i.e. the Patriarchate.  It was subsequently conferred to Enrico and Arbeno Attems by the grateful patriarch in recognition of the faithful services provided in the wars with Frederick I. The family had properties and influence among the fiefs of Friuli at the time when the lands were governed by the Patriarchs of Aquileia.
It is certain that Attems (Attimis), already in the eleventh century was a marquisate, even before Enrico and Arbeno had received it as a fief by the patriarch Voldarico. We are equally in the dark as to who and what time this title was conferred.
Two were the castles of Attimis: the Upper and the Lower one. The former is extremely ancient, it is composed of a tower and two turrets. The lower castle was instead built between 1250 and 1260 and its territory was extremely vast. Between its borders it embraced many villages of the promontory, and spread out in the plains until the vicinity of Udine in that territory Raimondo della Torre knighted Enrico son of Alberto count of Gorizia and other Alemannic barons and lords of Friuli.
In 1387 the family was allied, like many others, to the Counts da Camino and to the Princes Da Carrara. The family hired the venture captain Bello di Portogallo and his mercenaries, which, attending compensation for their service, took the Attems’ Lower Castle as guarantee. The 10th of February 1387 these payments were settled and the stronghold returned. That same year, Udine sent to Attimis cannons and different military instruments aimed at the defence of the lower stronghold, which made it amongst the first ones in Italy to possess such weaponry.
Meanwhile, the Upper castle of Attimis fell into ruin, and the same faith overtook the lower one not much after (1484) due to widespread utilisation of bombard cannons.  In light of such the Attems built at the base of the hill a fortified manor which the Italian branch of the family resided in until 1944 when it was burnt down by the Nazifascist regime.
After the conquest of Friuli by the Republic of Venice and the incorporation into the Domini di Terraferma by 1433, a part of the family remained in Attimis while Frederick of Attems (1447–1521) moved to Gorizia (Görz), where in 1473 he became chancellor to the last Count Leonhard. When the latters comital line became extinct in 1500, he was confirmed in that office (Count) by the Habsburg emperor Maximilian I and in 1506 even was appointed governor of the Gorizia on behalf of the Inner Austrian archdukes.
Frederick's heirs split into the cadet branches of Heiligenkreuz and Petzenstein. Since then, the Attems family played an important role in the Habsburg Monarchy; both lines were elevated to the rank of Freiherren (Barons) in 1605 and given the title of Reichsgrafen (Counts of the Holy Roman Empire) in 1630 (Heiligenkreuz) and 1653 (Petzenstein).
Notable member was Karl Michael von Attems, born in Gorizia on the first of July 1711,
Attems