Guy "the Philosopher", margrave of Tuscany

Someone thinks Adalberto III, the Margrave is his son. But: <<Lamberto, Guido 's other brother, followed him as marquess of Tuscany and count of Lucca. On April 13, 945, a sentence appointed Oberto, Lamberto's descendant, duke of Spoleta, marquess of Milan, count of Luni and count Palatine...>>*http://www.imalaspina.com/en/history-of-the-malaspinas.html

{{( we know Margrave Oberto I Obizzo, count of Luni for sure son of Adalberto III, the Margrave, so this last one is Lamberto's son )]}

- https://en.wikipedia.org/wiki/Guy,_Margrave_of_Tuscany - He had one daughter, Theodora (or Bertha), and probably a few other children of which nothing else is known. None of his children survived him and when he died in 928 or 929 his brother Lambert succeeded him as count and duke of Lucca and margrave of Tuscany.

- http://www.treccani.it/enciclopedia/guido-di-toscana/ - Lasciò una figlia, Berta.

References

http://fmg.ac/Projects/MedLands/NORTHERN%20ITALY%20900-1100.htm#Ada...

Adalberto & his wife had three children:

a) GUIDO (-930). Liudprand names "Wido" as son of "Adelbertus Tuscorum marchio" and of Berta[731]. He succeeded his father in 915 as GUIDO Marchese of Tuscany, Conte di Lucca, as a minor. He was imprisoned in Mantua 916-[920]. m ([923/24]%29 as her second husband, MAROZIA, widow of ALBERICO Marchese di Spoleto, daughter of TEOFILACTO Senator of Rome & his wife Theodora --- (-in prison [932/37]). Liudprand names "Marotiam et Theodora" as the two daughters of Theodora[732]. The wife of "Albericus marchio" is referred to as "Theophilacti filia" in the Benedicti Chronicon, although not named[733]. Liudprand names "Maroziam scortum Romanam" as wife of Guido[734], and in a later passage names "Marozia, scortum impudens satis" when recording her marriage to King Ugo after the death of her second husband[735]. She married thirdly ([932]) as his third wife, Ugo King of Italy. The Memorial of "Maroza" states that she died "Jan VII indic IX"[736].

Marchese Guido & his wife had [three] children:

i) THEODORA [Berta] . She is named as daughter of Marchese Guido & his wife in Europäische Stammtafeln[737], but the primary source on which this is based has not yet been identified.

ii) BERTA (-after 14 Jan 945). A charter dated 14 Jan 945, reproduced in a notarial transcript dated 1301, records a donation to the monastery of SS Andrea e Gregorio "Clivuscauri" and names "Albericus…princeps atque omnium Romanorum senator atque Sergius…episcopus sancte Nepesine ecclesie, nec non et Constantinus illustris vir atque Bertha nobilissima puella uterine, et germani fratres Marozze quondam Romanorum senatricis filii, nec non et Marozza seu Stephania nobilissima femina, germane sorores et consobrine eorum Theodore quondam Romanorum senatricis filie", subscribed by (in order) "Alberic, Marozza, Stephania, Bertha, Sergius, Constantine"[738].

iii) other children. Europäische Stammtafeln refers to other unnamed children of Marchese Guido & his wife[739], but the primary source on which this is based has not yet been identified.