When attorney Greg Lawrence decided to leave the Baltimore firm where he’d worked for 14 years to create his own practice, it dawned on him that he knew the perfect person to be his next law partner: his sister Kate Lawrence. On Nov. 1, the two siblings will-move into their new offices in the B&O Warehouse next to Camden Yards, where they will run Lawrence Law, the firm that Kate previously operated on her own. Greg will leave Conti Fenn & Lawrence LLC the same day.