How do I find an artist of oil paintings?

How do I find an artist of oil paintings?

Identifying a work of art I: Gathering evidence. Start with the evidence provided by the object itself. Gather as much information as you can by thoroughly examining the front, back, and all sides (including the inside, if applicable) of the piece. Look first for a signature and a date.

What is an artist signature called?

An artist's signature is a calling card.