Adelchis I or Adelgis I (died c. 861) was the Count of Parma by the 830s, of Cremona after 841, and eventually of Brescia. According to some sources, he succeeded to the Duchy of Spoleto in 824.
Adelchis I or Adelgis I (died c. 861) held positions as Count of Parma by the 830s, then Count of Cremona from 841, and ultimately Count of Brescia. Certain accounts suggest he took control of the Duchy of Spoleto around 824.