Given the task definition and input, reply with output. Read the passage and find the corresponding pronoun for the given name. The word between ** ** is the target name. The pronoun should be one of 'her', 'him', 'he', 'she' and 'his' with proper casing based on the position in the passage.

The explanation offered by Muirhead is more prosaic than the fanciful rumours suggested. He examined the clothing left behind in the lighthouse and concluded that James Ducat and Thomas Marshall had gone down to the western landing stage, and that **Donald MacArthur** (the 'Occasional') had left the lighthouse during heavy rain in his shirt sleeves.
his