Is Bentley a Jewish name

Answer 1

No. It's an old English name, like Beverly. In both names, the ly ending means meadow or forest clearing, and the prefix describes that meadow. In the case of Bently, the meadow is dominated by bentgrass, sometimes called just bent. (Beverly refers to a bever meadow.)

In the early to mid 20th century, many Jewish parents gave their children very non-Jewish names in order to protect their children from discrimination. Some names, like Irving and Irwin became so common in Jewish circles that people now associate them with being Jewish, despite the fact that their origin is as are ultra "anglo" names. Bently does not seem to be in this category.