SAN FRANCISCO — Fenwick & West represented Redwood City-based Rocket Fuel Inc. in its $230 million purchase of data management and marketing company X Plus One Solutions Inc., the firm announced Wednesday.

Mountain View-based partner R. Gregory Roussel led the Fenwick team, which included partners Scott Spector and Mark Ostrau and San Francisco-based partner Stephen Gillespie. Roussel did not return a call for comment.