Mark 4:15

Satan : a person, male (evil angelic),an angel that has rebelled against God

Mark 6:48

There is no Names related to this verses.

Mark 10:1

Jordan : the river that flows from Lake Galilee to the Dead Sea,a river that begins at Mt. Hermon, flows south through Lake Galilee and on to its end at the Dead Sea 175 km away (by air)
(32° 18´, 35° 33´)

Judea : a region that roughly corresponded to the earlier kingdom of Judah
(31° 46´, 35° 14´); (31° 46´, 35° 14´)