which language did they speak?
Swabian, Swabian German
Language
SIL Ethnologue cites an estimate of 819,000 Swabian speakers as of 2006. This corresponds to roughly 10% of the total population of the Swabian region, or roughly 1% of the total population of Germany.

As an ethno-linguistic group, Swabians are closely related to other speakers of Alemannic German, i.e. Badeners, Alsatians, and German-speaking Swiss.

Swabian German is traditionally spoken in the upper Neckar basin (upstream of Heilbronn), along the upper Danube between Tuttlingen and Donauwörth, and on the left bank of the Lech, in an area centered on the Swabian Alps roughly stretching from Stuttgart to Augsburg.
when did the first silesian war take place? 1740 where? Silesia, Moravia and Bohemia between whom? Prussia and Austria what was its prime cause? Brandenburg–Prussia's ruling House of Hohenzollern held dynastic claims to various duchies within the Habsburg province of Silesia when was this ruling house established? The family arose during the 11th century where did they live? The family arose in the area around the town of Hechingen in Swabia what is the geographical location of this last place? Southwestern Germany
Swabian German Swabian German Swabian German
Swabia Swabia Swabia
Introduction Language Language
Swabians ("Schwaben", singular "Schwabe") are the natives of Swabia and speakers of Swabian German. Their number was estimated at close to 0.8 million by SIL Ethnologue as of 2006, compared to a total population of 7.5 million in the regions of Tübingen, Stuttgart and Bavarian Swabia. Swabian German is traditionally spoken in the upper Neckar basin (upstream of Heilbronn), along the upper Danube between Tuttlingen and Donauwörth, and on the left bank of the Lech, in an area centered on the Swabian Alps roughly stretching from Stuttgart to Augsburg. Alemannic German, i.e. Badeners, Alsatians, and German-speaking Swiss.
wiki:13058434
Swabia [SEP] Language
SIL Ethnologue cites an estimate of 819,000 Swabian speakers as of 2006. This corresponds to roughly 10% of the total population of the Swabian region, or roughly 1% of the total population of Germany. As an ethno-linguistic group, Swabians are closely related to other speakers of Alemannic German, i.e. Badeners, Alsatians, and German-speaking Swiss. Swabian German is traditionally spoken in the upper Neckar basin (upstream of Heilbronn), along the upper Danube between Tuttlingen and Donauwörth, and on the left bank of the Lech, in an area centered on the Swabian Alps roughly stretching from Stuttgart to Augsburg.