Complex sentence: Originally known as "Robbins Jorgensen Christopher", the firm was originally formed in San Diego in 1991 by James Robbins, Roberta Jorgensen, and Janene Christopher; in 2004, the firm's name became RJC Architects after Roberta Jorgensen left the firm.
Split into simpler sentences: Originally known as "Robbins Jorgensen Christopher", the firm was originally formed in San Diego in 1991 by James Robbins, Roberta Jorgensen, and Janene Christopher. In 2004, the firm's name became RJC Architects after Roberta Jorgensen left the firm.