A speculation but definitely a possibility.
https://www.livescience.com/da-vincis-mother-was-an-enslaved-teenager-trafficked-to-italy-new-documents-suggest?utm_term=B77E4C33-0C96-4AD6-A785-7C144DCCD548&utm_campaign=368B3745-DDE0-4A69-A2E8-62503D85375D&utm_medium=email&utm_content=E28C511C-55E3-42DF-82DC-510D36E14BE3&utm_source=SmartBrief