Maybe I'll give it a shot now :)
Not all of the origins of the names of neighborhoods are known. The one
I've always wondered about was the "Tender Loin"/"Tenderloin" district
of SF. There are a lot of anecdotes about the origin of this name  but
no one has a definitive answer.
Charles H. Gough - A local milkman who served on the 1855 committee tasked with naming the streets of the Western Addition. He named Gough Street after himself and Octavia Street after his sister, and may have named Steiner Street after a friend.
(I assume T-graph followed a telegraph route between Oakland and Berkeley. I more or less know where West MacArf got its name.)
San Pablo is the road to the town of San Pablo.
Peralta is from Don Luís María Peralta, owner of Rancho San Antonio.