Question: Who is Tassilo Ii Of Bavaria's grandchild?

Knowledge 1: Tassilo II of Bavaria
Tassilo II (died c. 719) was a ruler in southern Germany.He was the son, probably third, of Theodo of Bavaria and Folchaid.Sometime before 715, Theodo divided his duchy and associated with its rule the eldest two of his four sons.The eldest, Theodbert, was co-ruling as early as 702 and the second, Theobald, from 711.On Theodo's death (probably in 716), the division took full effect.It is not known if the division was territorial (as with the Merovingians) or purely a co-regency (as with the later princes of Benevento and Capua).If the former, it seems to have followed the fourfold ecclesiastic division into dioceses which Theodo had effected.If that is the case, it is most probable that Tassilo ruled the diocese of Passau with his capital there at its see.War broke out between the brothers soon after their father's death, but few details are known.About Tassilo's time as duke, next to nothing is known.His existence is confirmed in the "Codex of SalzburgSalzburger Verbrüderungsbuch") where he is listed as unmarried, though some surmise that a certain Waldrada, mentioned as a wife of Theobald, was in factTassilo's.On the other hand, he is identified as the husband of Imma (d. c. 750), by whom he had Grimoald and Swanachild.Through Swanachild, Tassilo would be the father-in-law of Charles Martel.Because Swanachild is with certainty the niece of duke Odilo, one would be forced to assume that Odilo was brother or brother-in-law to Tassilo.Tassilo was dead by 719, as were all his brothers save Grimoald. [SEP] Knowledge 2: Swanachild
Swanachild (also "Swanahild" or "Serenahilt") was the second wife of Charles Martel, who brought her back from his first campaign in Bavaria in 725, along with her uncle Grimoald's wife, Biltrude.Swanachild belonged to the clan of the Agilolfings though her parentage is not quite clear.Her parents could be:
With Charles Martelshe had one child, Grifo.After the death of Charles, she supported her son's failed attempt to gain a portion of his inheritance.This she did with the support of her uncle Odilo of Bavaria.Afterwards she was relegated to the position of abbess of Chelles.Although later Carolingian historians cast her as a concubine, she was during her time the rightful wife of Charles.The "Reichenau Codex" listed her as "Suanahil reginaQueen Swanachild."
Knowledge 1: Tassilo II of Bavaria
Tassilo II (died c. 719) was a ruler in southern Germany.He was the son, probably third, of Theodo of Bavaria and Folchaid.Sometime before 715, Theodo divided his duchy and associated with its rule the eldest two of his four sons.The eldest, Theodbert, was co-ruling as early as 702 and the second, Theobald, from 711.On Theodo's death (probably in 716), the division took full effect.It is not known if the division was territorial (as with the Merovingians) or purely a co-regency (as with the later princes of Benevento and Capua).If the former, it seems to have followed the fourfold ecclesiastic division into dioceses which Theodo had effected.If that is the case, it is most probable that Tassilo ruled the diocese of Passau with his capital there at its see.War broke out between the brothers soon after their father's death, but few details are known.About Tassilo's time as duke, next to nothing is known.His existence is confirmed in the "Codex of SalzburgSalzburger Verbrüderungsbuch") where he is listed as unmarried, though some surmise that a certain Waldrada, mentioned as a wife of Theobald, was in factTassilo's.On the other hand, he is identified as the husband of Imma (d. c. 750), by whom he had Grimoald and Swanachild.Through Swanachild, Tassilo would be the father-in-law of Charles Martel.Because Swanachild is with certainty the niece of duke Odilo, one would be forced to assume that Odilo was brother or brother-in-law to Tassilo.Tassilo was dead by 719, as were all his brothers save Grimoald. [SEP] Knowledge 2: Therese of Saxe-Hildburghausen
Therese Charlotte Luise of Saxony-Hildburghausen (Therese of Bavaria; 8 July 1792 – 26 October 1854) was a queen consort of Bavaria as the wife of Ludwig I, King of Bavaria.
Knowledge 1: Tassilo II of Bavaria
Tassilo II (died c. 719) was a ruler in southern Germany.He was the son, probably third, of Theodo of Bavaria and Folchaid.Sometime before 715, Theodo divided his duchy and associated with its rule the eldest two of his four sons.The eldest, Theodbert, was co-ruling as early as 702 and the second, Theobald, from 711.On Theodo's death (probably in 716), the division took full effect.It is not known if the division was territorial (as with the Merovingians) or purely a co-regency (as with the later princes of Benevento and Capua).If the former, it seems to have followed the fourfold ecclesiastic division into dioceses which Theodo had effected.If that is the case, it is most probable that Tassilo ruled the diocese of Passau with his capital there at its see.War broke out between the brothers soon after their father's death, but few details are known.About Tassilo's time as duke, next to nothing is known.His existence is confirmed in the "Codex of SalzburgSalzburger Verbrüderungsbuch") where he is listed as unmarried, though some surmise that a certain Waldrada, mentioned as a wife of Theobald, was in factTassilo's.On the other hand, he is identified as the husband of Imma (d. c. 750), by whom he had Grimoald and Swanachild.Through Swanachild, Tassilo would be the father-in-law of Charles Martel.Because Swanachild is with certainty the niece of duke Odilo, one would be forced to assume that Odilo was brother or brother-in-law to Tassilo.Tassilo was dead by 719, as were all his brothers save Grimoald. [SEP] Knowledge 2: Caroline of Baden
Caroline of Baden( 13 July1776 – 13 November 1841) was by marriage an Electress of Bavaria and later the first Queen consort of Bavaria by marriage to Maximilian I Joseph of Bavaria.

Answer: Grifo