part from someone—separate from a person; leave smb.’s company:
- Jagiello must have had great feelings for Elzbieta, for he never parted from her. They always journeyed together.
part with someone—
1. lose the services of a person; dismiss smb. from employment:
- Mr. Jackson has rendered very valuable service to the firm, and we are very sorry to part with him.
2. = part from someone:
- Sian was still married, though separated, having parted with her husband to fulfil her vocation on the stage.
Note: The expression is not equivalent in meaning to the phrase part company with someone—
1. (of travel companions, etc.) separate:
- We did a small European tour and after this tour we parted company with our singer Jonathan.
2. disagree with a person:
- Even those who generally agree with the headmaster would part company with him there.